A method for simulating the crushing of workpieces cut by diamond saw blades

Abstract

The present invention relates to the field of crushing simulation technology, and specifically to a method for simulating the crushing of a workpiece cut by a diamond saw blade. The present invention provides a method for simulating the crushing of a workpiece cut by a diamond saw blade, comprising the following steps: S1: using three-dimensional modeling software to respectively establish a cutting workpiece geometric model and a diamond saw blade geometric model; S2: importing the cutting workpiece geometric model and the diamond saw blade geometric model into finite element analysis software respectively, and then respectively establishing a cutting workpiece material constitutive model and a diamond saw blade material constitutive model; S3: using finite element analysis software to create an analysis step, and selecting a load module to apply loads to the cutting workpiece and the diamond saw blade respectively. This method for simulating the crushing of a workpiece cut by a diamond saw blade can provide theoretical guidance for the process of diamond saw blade cutting C25 concrete, facilitate the subsequent data basis for the design of diamond circular saw blades, and provide guiding ideas and data support for the performance design of diamond tools.

Description

Technical Field

[0001] The invention relates to the technical field of crushing simulation, and in particular to a method for simulating the crushing of a workpiece cut by a diamond saw blade. Background Art

[0002] Diamond circular saw blades are widely used in the processing of hard and brittle materials such as marble, concrete, and granite. my country is currently in a period of high-quality development, and the investment in urban housing, decoration, and infrastructure construction remains large, providing a sustained and stable market space for the development of diamond circular saw blades, while also putting forward higher requirements for the sawing performance of diamond circular saw blades.

[0003] There are many types of diamond circular saw blades at present, and the performance of various diamond circular saw blades varies greatly. How to simulate the whole process of diamond circular saw blades cutting brittle materials such as concrete, reveal the crushing mechanism of diamond tools cutting workpiece materials, and then guide the design of diamond circular saw blades to obtain diamond circular saw blades with better performance has become an issue that needs to be studied urgently. Summary of the invention

[0004] (I) The problem to be solved by the present invention is: how to simulate the whole process of diamond circular saw blade cutting brittle materials such as concrete, reveal the crushing mechanism of diamond tool cutting workpiece materials, and then guide the design of diamond circular saw blade to obtain diamond circular saw blade with better performance.

[0005] (II) Technical solution

[0006] A method for simulating the crushing of a workpiece cut by a diamond saw blade comprises the following steps:

[0007] S1: Use 3D modeling software to build the cutting workpiece geometry model and diamond saw blade geometry model respectively;

[0008] S2: Importing the cutting workpiece geometric model and the diamond saw blade geometric model into the finite element analysis software respectively, and then establishing the cutting workpiece material constitutive model and the diamond saw blade material constitutive model respectively;

[0009] S3: Use finite element analysis software to create an analysis step, select the load module to apply loads to the cut workpiece and diamond saw blade respectively, and set the field output; the field output includes stress, strain, displacement, action force and reaction force;

[0010] S4: Divide the network and submit the calculation to obtain the calculation results.

[0011] According to an embodiment of the present invention, the cutting workpiece in step S1 is a concrete slab, and the material constitutive model of the cutting workpiece in step S2 is a concrete HJC model.

[0012] According to one embodiment of the present invention, establishing a constitutive model of diamond saw blade material in step S2 includes:

[0013] The linear elastic model of diamond material, the linear elastic model of matrix material and the linear elastic model of saw blade body are established.

[0014] According to one embodiment of the present invention, the matrix material in the matrix material linear elastic model is a ternary alloy composed of iron, copper and cobalt, and its composition ratio is 25% iron, 50% copper and 25% cobalt;

[0015] Or, it is an iron-nickel-copper-cobalt-tin multi-element alloy, whose composition ratio is 30% iron, 15% nickel, 25% copper, 20% cobalt and 10% tin.

[0016] According to one embodiment of the present invention, the diamond saw blade geometric model in step S1 includes a saw blade body, a matrix and diamonds, and the saw blade body includes a matrix and cutting teeth arranged on the matrix;

[0017] The step S1 of establishing the diamond saw blade geometric model includes the following steps: establishing a saw blade body, then establishing a matrix on the cutting surface of the cutting teeth of the saw blade body, and finally establishing a set number of diamonds on the matrix according to a set arrangement rule.

[0018] According to one embodiment of the present invention, the step of establishing a set number of diamonds on the matrix according to a set arrangement rule comprises:

[0019] Five rows of diamond particles are arranged on the matrix along the length direction of the cutting teeth, and three rows of diamond particles are arranged along the thickness direction of the cutting teeth, each row of diamond particles includes three diamond particles, and each row of diamond particles includes five diamond particles;

[0020] The spacing between two adjacent columns of diamond particles is 4 mm, and the spacing between two adjacent rows of diamond particles is 1 mm.

[0021] According to one embodiment of the present invention, the step of establishing a set number of diamonds on the matrix according to a set arrangement rule comprises:

[0022] Five rows of diamond particles are arranged on the matrix along the length direction of the cutting teeth, and two rows of diamond particles are arranged along the thickness direction of the cutting teeth, each row of diamond particles includes two diamond particles, and each row of diamond particles includes five diamond particles;

[0023] The spacing between two adjacent columns of diamond particles is 4 mm, and the spacing between two adjacent rows of diamond particles is 1 mm.

[0024] According to one embodiment of the present invention, the step of establishing a set number of diamonds on the matrix according to a set arrangement rule comprises:

[0025] On the matrix, 7 rows of diamond particles are arranged along the length direction of the cutting teeth, and 2 rows of diamond particles are arranged along the thickness direction of the cutting teeth, each row of diamond particles includes 2 diamond particles, and each row of diamond particles includes 7 diamond particles;

[0026] The spacing between two adjacent columns of diamond particles is 3 mm, and the spacing between two adjacent rows of diamond particles is 1 mm.

[0027] According to an embodiment of the present invention, in the step S4, a load is applied to the cutting workpiece to fix the cutting workpiece, and applying a load to the diamond saw blade includes constraining the center of the diamond saw blade and setting a rotation speed and a translation speed.

[0028] According to one embodiment of the present invention, the saw blade outer diameter of the diamond saw blade geometric model in step S1 is 350 mm, the center hole diameter is 25.4 mm, the number of teeth is 44, the tooth length is 20 mm, the tooth height is 10 mm, the tooth thickness is 3.2 mm, and the base thickness is 2.2 mm.

[0029] Beneficial effects of the present invention:

[0030] The present invention establishes an interaction model between a diamond saw blade and C25 concrete, uses finite element analysis software to simulate the entire process of a diamond circular saw blade cutting brittle materials such as concrete, thereby obtaining physical images at different moments in the complete cutting process, and calculating the stress and strain distribution of the diamond saw blade and concrete during the cutting process, thereby providing theoretical guidance for the process of a diamond saw blade cutting C25 concrete, and in conjunction with a limited number of experiments, can provide a data basis for the design of a diamond circular saw blade, and provide guiding ideas and data support for the performance design of diamond tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 A schematic flow chart of a method for simulating the crushing of a workpiece cut by a diamond saw blade provided in an embodiment of the present invention;

[0033] Figure 2 A geometric model diagram of a diamond saw blade provided in an embodiment of the present invention;

[0034] Figure 3 The arrangement diagram of diamond particles in the experimental scheme 1 provided in the embodiment of the present invention;

[0035] Figure 4 The arrangement diagram of diamond particles in the experimental scheme 2 provided in the embodiment of the present invention;

[0036] Figure 5 The arrangement diagram of diamond particles in Experimental Scheme 3 provided in the embodiment of the present invention;

[0037] Figure 6 A stress output result diagram of the experimental scheme 1 provided in an embodiment of the present invention;

[0038] Figure 7 A diagram showing stress output results in Experimental Scheme 2 provided in an embodiment of the present invention;

[0039] Figure 8 This is a diagram of stress output results in Experimental Scheme 3 provided in an embodiment of the present invention.

[0040] Icon: 1. Base; 101. Middle hole; 2. Cutting teeth. DETAILED DESCRIPTION

[0041] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] like Figure 1 As shown, one embodiment of the present invention provides a method for simulating the crushing of a workpiece cut by a diamond saw blade, comprising the following steps:

[0043] Step 1: Use 3D modeling software to build the cutting workpiece geometry model and diamond saw blade geometry model (such as Figure 2 shown);

[0044] Exemplarily, the 3D modeling software is any one of common 3D modeling software such as SolidWorks, Autodesk Maya, PTC Creo, etc.

[0045] Exemplarily, the size of the cut workpiece is specifically: 300 mm (length) * 25 mm (thickness) * 300 mm (width).

[0046] It should be clear that if Figure 2 The diamond saw blade comprises a matrix 1, a plurality of cutting teeth 2 arranged on the peripheral surface of the matrix 1, and diamond particles arranged on the cutting surface of the cutting teeth. A central hole 101 is opened at the center of the matrix 1. The diamond particles are fixed to the cutting surface of the cutting teeth 2 by the matrix.

[0047] It should be noted that the diamond matrix is ​​used to support and fix the diamond particles so that they can effectively perform cutting or grinding operations. The main function of the diamond matrix is ​​to provide the necessary strength and wear resistance to ensure that the diamond particles do not fall off when used in the tool, while maintaining the efficiency and durability of the tool.

[0048] In this embodiment, specific parameters of a diamond saw blade geometric model are shown in Table 1 below:

[0049]

[0050] Table 1

[0051] It can be seen that the outer diameter of the diamond saw blade geometric model is 350 mm, the aperture of the middle hole 101 is 25.4 mm, the number of teeth of the cutting tooth 2 is 44, the tooth length of the cutting tooth 2 is 20 mm, the tooth height of the cutting tooth 2 is 10 mm, the tooth thickness of the cutting tooth 2 is 3.2 mm, and the thickness of the substrate 1 is 2.2 mm.

[0052] In this embodiment, there is no specific restriction on the specific parameters of the diamond saw blade geometric model, and the diamond saw blade geometric model may also be established according to the size parameters of other diamond saw blades on the market.

[0053] Step 2: Import the cutting workpiece geometry model and the diamond saw blade geometry model into the assembly module of the finite element analysis software, and then establish the cutting workpiece material constitutive model and the diamond saw blade material constitutive model respectively;

[0054] In this embodiment, the finite element analysis software is preferably Abaqus finite element analysis software. Abaqus has a rich unit type library that can simulate almost any geometric shape, and has an extensive material model library that can simulate the stress and deformation of various materials such as metals, rubber, polymers, concrete, glass, ceramics, foams, geotechnical materials, etc. at different temperatures and strain rates.

[0055] In this embodiment, the cutting workpiece material is any one of hard and brittle materials such as marble, concrete, granite, etc. Preferably, C25 concrete is used.

[0056] In this step, for concrete materials, the Johnson-Holmquist concrete model (HJC model) is used. This model can be applied to concrete and rock simulations under high strain rates and large deformations. The MAT_JOHNSON_HOLMGUIST_CONCRETE model comprehensively considers the effects of large strain, high strain rate, and high pressure. Its equivalent yield strength is a function of pressure, strain rate, and damage, while pressure is a function of volume strain (including permanent crushing state), and damage accumulation is a function of plastic volume strain, equivalent plastic strain, and pressure. The specific parameters of the constitutive model of concrete slab materials are shown in Table 3:

[0057]

[0058] Table 2

[0059] Where: G—concrete shear modulus (GPa); f c '—Static yield strength of concrete (GPa); S max —maximum dimensionless strength; A—dimensionless viscosity constant; B—dimensionless pressure hardening coefficient; C—strain rate coefficient; N—dimensionless pressure hardening exponent; D1, D2, EF min —Material damage constant; K1, K2, K3—Material parameters; ρ—Concrete density (kg / m3); P crush , μ crush — is the pressure and volume strain at the crush point; lock , μ lock — is the pressure at the compaction point of the material and the volume strain of the volume strain; T—pressure constant, F s —Failure type.

[0060] In this step, the constitutive model of diamond saw blade material is established, including the linear elastic model of diamond material, the linear elastic model of matrix material and the linear elastic model of saw blade body. It should be explained that diamond and matrix rarely have plasticity during the simulation process, so isotropic linear elastic material is used, which is defined as *MAT_ELASTIC constitutive model in Abaqus. In the simulation, the material model of saw blade body, diamond and matrix adopts *MAT_ELASTIC constitutive model, and the material parameters of diamond and matrix are shown in Table 3:

[0061]

[0062] Table 3

[0063] Among them, the density of diamond material is 3515kg / m3, the elastic modulus is 1050GPa, the Poisson's ratio is 0.2, the indentation hardness is 70000MPa, and the compressive strength is 8857MPa.

[0064] It should be noted that the material selection of the matrix has a direct and important impact on the performance, cutting efficiency and life of the diamond saw blade.

[0065] In this embodiment, the matrix is ​​a ternary alloy composed of iron, copper and cobalt, with a composition ratio of 25% iron, 50% copper and 25% cobalt. Its density is 8500kg / m 3 , elastic modulus is 55GPa, Poisson's ratio is 0.2, hardness is HRB100-110, and flexural strength is 1270MPa.

[0066] Optionally, the matrix is ​​an iron-nickel-copper-cobalt-tin multi-element alloy, and its composition ratio is 30% iron, 15% nickel, 25% copper, 20% cobalt and 10% tin.

[0067] In this embodiment, the saw blade body is made of 30CrMo steel material, and its chemical composition includes elements such as carbon (C), silicon (Si), manganese (Mn), chromium (Cr), and molybdenum (Mo). The specific content range is carbon C: 0.26~0.34%, silicon Si: 0.17~0.37%, manganese Mn: 0.40~0.70%, chromium Cr: 0.80~1.10%, and molybdenum Mo: 0.15~0.25%.

[0068] Step 3: Select the analysis step module of Abaqus finite element analysis software, create a dynamic explicit analysis step, set the time length to 0.001, set the mass scaling, and scale by a factor of 100.

[0069] It should be explained that the analysis step module allows users to create and manage analysis steps. Analysis steps are steps that define different stages in simulation analysis. Users can set the time length of the analysis step, incremental step control method, solver options, etc. in the analysis step module. These settings are crucial for controlling the progress and accuracy of the analysis. The field output module is used to control and define the settings for the output of field variables in the simulation analysis. In this embodiment, the field output includes stress, strain, displacement, action / reaction force, and contact, etc.

[0070] Then select the load module of Abaqus finite element analysis software to apply loads to the concrete slab and diamond saw blade respectively;

[0071] When applying load to the concrete slab, select the load module and set the concrete block, U1=U2=U3=UR1=UR2=UR3=0, to completely fix the concrete cutting material.

[0072] When applying load to the diamond saw blade, select the load module, constrain the center of the circular saw blade and set the rotation speed and translation speed of the circular saw blade.

[0073] Exemplarily, the rotation speed of the diamond saw blade is set to 314 and the translation speed is set to -300.

[0074] Finally, set up the field output module. The field output includes stress, strain, displacement, action / reaction force and contact.

[0075] Step 4: Divide the diamond circular saw blade and concrete slab into networks respectively.

[0076] For example, the mesh element type of the diamond circular saw blade selects explicit dynamics, selects C3D4, selects tetrahedral mesh, and selects 1.8 for the global seed number. The mesh element type of the concrete slab selects implicit dynamics, selects C3D8R, selects hexahedral mesh, selects 1 for the global seed number, and refines the mesh of the cutting part.

[0077] Step 5: Submit the job calculation, select the job module, create job1, job2, job3 to generate the solution file, and submit the calculation.

[0078] Step 6. Select the visualization module to view the calculation results, showing the stress, strain, displacement and other parameter results.

[0079] It can be seen that in this embodiment, an interaction model between the diamond saw blade and C25 concrete is established, and the finite element analysis software is used to simulate the whole process of the diamond circular saw blade cutting brittle materials such as concrete, so as to obtain the physical images at different times in the complete cutting process, and calculate the stress and strain distribution of the diamond saw blade and concrete during the cutting process, so as to provide theoretical guidance for the process of diamond saw blade cutting C25 concrete. Combined with a limited number of experiments, it can provide a data basis for the design of diamond circular saw blades, and provide guiding ideas and data support for the performance design of diamond tools.

[0080] It should be clear that the performance of the matrix material is one of the key factors affecting the performance of diamond saw blades. Good matrix materials can not only provide better support for diamonds, but also better transmit various stresses to ensure that diamond particles will not fall off easily when subjected to stress. Therefore, the above method can be used to simulate the entire process of diamond circular saw blades with different matrices cutting brittle materials such as concrete, that is, only the material of the matrix is ​​changed, and other parameters remain unchanged. Combined with a limited number of experiments, the stress and strain distribution results of diamond circular saw blades with different matrices in the process of cutting the same concrete can be obtained.

[0081] In addition, the arrangement of diamond particles on the diamond circular saw blade has a great influence on the performance of the tool. When the diamond particles are too dense, the material cannot be sawed effectively. On the contrary, if the diamond particles are too sparse, the force on a single diamond particle is too large during sawing, which can easily cause overload, causing the diamond particles to break or even fall off, and reducing the tool life. According to different structures and workloads, it is necessary to design diamonds with different arrangement structures to obtain products with the best comprehensive performance.

[0082] In order to solve this technical problem, the present invention has carried out the following three groups of experimental schemes according to the above-mentioned method of simulating the workpiece cutting and crushing by a diamond saw blade:

[0083] Experimental plan 1:

[0084] In the first step, a 3D modeling software (eg, SolidWorks) is used to respectively establish a cutting workpiece and a diamond saw blade geometric model, wherein the size of the cutting workpiece is specifically: 300 mm*25 mm*300 mm.

[0085] The specific dimensions of the diamond saw blade geometric model are: the outer diameter of the saw blade is 350 mm, the aperture of the middle hole 101 is 25.4 mm, the number of teeth of the cutting tooth 2 is 44, the tooth length of the cutting tooth 2 is 20 mm, the tooth height of the cutting tooth 2 is 10 mm, the tooth thickness of the cutting tooth 2 is 3.2 mm, and the thickness of the substrate 1 is 2.2 mm.

[0086] Then, 15 diamond particles are placed on the cutting surface of each cutting tooth 2 as follows: Figure 3 Arrange as shown.

[0087] from Figure 3 It can be seen that 15 diamond particles are fixed to the cutting surface of the cutting tooth through the matrix powder. Specifically, 5 columns are arranged along the length direction of the cutting tooth, with 3 diamond particles in each column, and 3 rows are arranged along the thickness direction of the cutting tooth, with 5 diamond particles in each row. The spacing between two adjacent columns of diamond particles is 4 mm, and the spacing between two adjacent rows of diamond particles is 1 mm. In addition, the distance between the two outermost diamond particles in each column of diamond particles and the side of the cutting tooth is 0.6 mm. In each row of diamond particles, the distance between the two outermost diamond particles and the side of the cutting tooth is 2 mm.

[0088] In the second step, the cutting workpiece geometric model and the diamond saw blade geometric model are respectively imported into the assembly module of the Abaqus finite element analysis software, and then the cutting workpiece material constitutive model and the diamond saw blade material constitutive model are established to define the cutting workpiece and the diamond saw blade material respectively.

[0089] The cutting workpiece material is concrete, and the set parameters are shown in Table 2 above.

[0090] Diamond saw blade material: The saw blade body is made of 30CrMo steel material. The density of diamond material is 3515kg / m3, the elastic modulus is 1050GPa, the Poisson's ratio is 0.2, the indentation hardness is 70000MPa, and the compressive strength is 8857MPa.

[0091] The matrix is ​​a ternary alloy of iron, copper and cobalt, with a composition ratio of 25% iron, 50% copper and 25% cobalt. Its density is 8500kg / m 3 , elastic modulus is 55GPa, Poisson's ratio is 0.2, hardness is HRB100-110, and flexural strength is 1270MPa.

[0092] The third step is to select the analysis step module of Abaqus finite element analysis software, create a dynamic explicit analysis step, set the time length to 0.001, set the mass scaling, and scale by a factor of 100.

[0093] Then select the load module of Abaqus finite element analysis software to apply loads to the concrete slab and diamond saw blade respectively;

[0094] When applying load to the concrete slab, select the load module and set the concrete block, U1=U2=U3=UR1=UR2=UR3=0, to completely fix the concrete cutting material.

[0095] When applying load to the diamond saw blade, select the load module, constrain the center of the circular saw blade and set the rotation speed of the circular saw blade to 314 and the translation speed to -300.

[0096] Finally, set up the field output module. The field output includes stress, strain, displacement, action / reaction force and contact.

[0097] The fourth step is to divide the diamond circular saw blade and the concrete slab into networks. For the diamond circular saw blade, select explicit dynamics, select C3D4, select tetrahedral mesh, and select 1.8 for the global seed number. For the concrete slab, select implicit dynamics, select C3D8R, select hexahedral mesh, select 1 for the global seed number, and refine the mesh of the cutting part.

[0098] Step 5: Submit the job calculation, select the job module, create job1, job2, job3 to generate the solution file, and submit the calculation.

[0099] Step 6. Select the visualization module to view the stress calculation results.

[0100] In this experimental scheme, stress parameters are used as the main reference, such as Figure 6 As shown, the maximum stress is 8.235×10 4 MPa.

[0101] Experimental plan 2:

[0102] The difference between Experiment 2 and Experiment 1 is the number and arrangement of diamond particles. In Experiment 2, 10 diamond particles are arranged as follows. Figure 4 Arrange as shown.

[0103] from Figure 4 It can be seen that 10 diamond particles are fixed to the cutting surface of the cutting tooth through the matrix powder. Specifically, 5 columns are arranged along the length direction of the cutting tooth, with 2 diamond particles in each column, and 2 rows are arranged along the thickness direction of the cutting tooth, with 5 diamond particles in each row. The spacing between two adjacent columns of diamond particles is 4 mm, and the spacing between two adjacent rows of diamond particles is 1 mm. In addition, the distances between the two diamond particles in each column of diamond particles and the side of the cutting tooth are 1 mm and 1.2 mm, respectively. In each row of diamond particles, the distance between the outermost two diamond particles and the side of the cutting tooth is 2 mm.

[0104] The final stress calculation results are as follows: Figure 7 As shown, the maximum stress is 1.267×104MPa.

[0105] Experimental plan three:

[0106] The only difference between Experiment 3 and Experiment 1 is the number and arrangement of diamond particles. In Experiment 3, 14 diamond particles are arranged as follows: Figure 5 Arrange as shown.

[0107] from Figure 5 It can be seen that 14 diamond particles are fixed to the cutting surface of the cutting teeth through the matrix powder. Specifically, 7 columns are arranged along the length direction of the cutting teeth, with 2 diamond particles in each column, and 2 rows are arranged along the thickness direction of the cutting teeth, with 7 diamond particles in each row. The spacing between two adjacent columns of diamond particles is 3mm, and the spacing between two adjacent rows of diamond particles is 1mm. In addition, the distances between the two diamond particles in each column of diamond particles and the side of the cutting teeth are 1mm and 1.2mm respectively. In each row of diamond particles, the distance between the two outermost diamond particles and the side of the cutting teeth is 1mm.

[0108] The final stress calculation results are as follows: Figure 8 As shown, the maximum stress is 7.901×104MPa.

[0109] From the calculated stress results, the maximum stress generated by the diamond saw blade in the diamond arrangement scheme 1 during cutting is greater than the stress values ​​of the other two schemes, so the diamond arrangement scheme 1 has the best cutting efficiency and the fastest cutting speed. Therefore, for the above-mentioned diamond circular saw blade, the arrangement of diamond particles according to the arrangement of experiment 1 is the best scheme.

[0110] It can be seen that the method of simulating the crushing of workpieces cut by diamond saw blades can simulate the entire process of cutting brittle materials such as concrete by diamond circular saw blades with different diamond arrangements, obtain physical images at different times during the complete cutting process, and thus obtain the performance parameters of diamond circular saw blades with different diamond arrangements, thereby providing strong data support for designing products with the best comprehensive performance.

[0111] In the description of the present invention, it should be noted that the terms "upper", "lower", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0112] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the inside of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0113] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for simulating the crushing of workpieces cut by a diamond saw blade, characterized in that: The steps include: S1: Use 3D modeling software to build the cutting workpiece geometry model and diamond saw blade geometry model respectively; S2: Importing the cutting workpiece geometric model and the diamond saw blade geometric model into the finite element analysis software respectively, and then establishing the cutting workpiece material constitutive model and the diamond saw blade material constitutive model respectively; S3: Use finite element analysis software to create an analysis step, select the load module to apply loads to the cut workpiece and diamond saw blade respectively, and set the field output; the field output includes stress, strain, displacement, action force and reaction force; S4: Divide the network and submit the calculation to obtain the calculation results.

2. The method for simulating the crushing of workpieces cut by a diamond saw blade according to claim 1, characterized in that: The cutting workpiece in step S1 is a concrete slab, and the material constitutive model of the cutting workpiece in step S2 is a concrete HJC model.

3. The method for simulating the crushing of workpieces cut by a diamond saw blade according to claim 2, characterized in that: The constitutive model of the diamond saw blade material established in step S2 includes: The linear elastic model of diamond material, the linear elastic model of matrix material and the linear elastic model of saw blade body are established.

4. The method for simulating the crushing of workpieces cut by a diamond saw blade according to claim 3, characterized in that: The matrix material in the matrix material linear elastic model is a ternary alloy composed of iron, copper and cobalt, and its composition ratio is 25% iron, 50% copper and 25% cobalt; Or, it is an iron-nickel-copper-cobalt-tin multi-element alloy, whose composition ratio is 30% iron, 15% nickel, 25% copper, 20% cobalt and 10% tin.

5. The method for simulating the crushing of workpieces cut by a diamond saw blade according to claim 1, characterized in that: The diamond saw blade geometric model in step S1 includes a saw blade body, a matrix and diamonds, and the saw blade body includes a matrix and cutting teeth arranged on the matrix; The step S1 of establishing the diamond saw blade geometric model includes the following steps: establishing a saw blade body, then establishing a matrix on the cutting surface of the cutting teeth of the saw blade body, and finally establishing a set number of diamonds on the matrix according to a set arrangement rule.

6. The method for simulating the crushing of workpieces cut by a diamond saw blade according to claim 5, characterized in that: The step of establishing a set number of diamonds on the matrix according to the set arrangement rule comprises: Five rows of diamond particles are arranged on the matrix along the length direction of the cutting teeth, and three rows of diamond particles are arranged along the thickness direction of the cutting teeth, each row of diamond particles includes three diamond particles, and each row of diamond particles includes five diamond particles; The spacing between two adjacent columns of diamond particles is 4 mm, and the spacing between two adjacent rows of diamond particles is 1 mm.

7. The method for simulating the crushing of workpieces cut by a diamond saw blade according to claim 5, characterized in that: The step of establishing a set number of diamonds on the matrix according to the set arrangement rule comprises: Five rows of diamond particles are arranged on the matrix along the length direction of the cutting teeth, and two rows of diamond particles are arranged along the thickness direction of the cutting teeth, each row of diamond particles includes two diamond particles, and each row of diamond particles includes five diamond particles; The spacing between two adjacent columns of diamond particles is 4 mm, and the spacing between two adjacent rows of diamond particles is 1 mm.

8. The method for simulating the crushing of workpieces cut by a diamond saw blade according to claim 5, characterized in that: The step of establishing a set number of diamonds on the matrix according to the set arrangement rule comprises: On the matrix, 7 rows of diamond particles are arranged along the length direction of the cutting teeth, and 2 rows of diamond particles are arranged along the thickness direction of the cutting teeth, each row of diamond particles includes 2 diamond particles, and each row of diamond particles includes 7 diamond particles; The spacing between two adjacent columns of diamond particles is 3 mm, and the spacing between two adjacent rows of diamond particles is 1 mm.

9. The method for simulating the crushing of workpieces cut by a diamond saw blade according to claim 3, characterized in that: In the step S4, a load is applied to the cutting workpiece to fix the cutting workpiece, and applying a load to the diamond saw blade includes: Constrain the center of the diamond saw blade and set the rotation speed and translation speed.

10. A method for simulating workpiece crushing by cutting with a diamond saw blade according to any one of claims 7 to 9, characterized in that: The diamond saw blade geometric model in step S1 has an outer diameter of 350 mm, a center hole diameter of 25.4 mm, 44 teeth, a tooth length of 20 mm, a tooth height of 10 mm, a tooth thickness of 3.2 mm, and a base thickness of 2.2 mm.

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