Method and device for testing crashworthiness of rubber

Abstract

The invention provides a method for testing the crashworthiness of rubber, and the method comprises the steps: S10, setting a moving part and an impact part, enabling the moving part to fix the rubber, and enabling the moving part to move along an impact direction so as to drive the rubber to impact the impact part; s20, the rubber is fixed to the moving part; s30, the moving part is driven to move at the preset initial speed, and the rubber is driven to impact the impact part; s40, the impact force borne by the rubber is collected; s50, the deformation amount and the recovery rate of the rubber after being impacted are collected; and S60, evaluating the crashworthiness of the rubber according to the initial speed of the moving part, the impact force applied to the rubber, and the deformation and recovery rate of the rubber after being impacted. According to the method for testing the crashworthiness of the rubber, a horizontal collision mode is adopted, so that the stress condition of a rubber material in practical application is reduced. The invention also provides a device for testing the crashworthiness of the rubber, which is used for realizing the method.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of material mechanics testing, and particularly relates to a rubber crashworthiness testing method and device. BACKGROUND

[0002] Rubber materials are widely used in occasions requiring shock absorption and impact resistance. Traditional free impact testing devices cannot completely simulate the stress conditions of rubber materials in actual use, and considering the deformation of rubber materials, it is even more impossible to obtain test results under the same conditions. SUMMARY

[0003] The present application aims to provide a rubber crashworthiness testing method, which adopts a horizontal impact mode to restore the stress conditions of rubber materials in actual use.

[0004] Another object of the present application is to provide a rubber crashworthiness testing device, which adopts a horizontal impact mode to restore the stress conditions of rubber materials in actual use.

[0005] The present application provides a rubber crashworthiness testing method, which comprises the following steps: S10: setting a moving part and an impact part, the moving part being capable of fixing rubber, and the moving part being capable of moving along an impact direction to drive the rubber to impact the impact part; S20: fixing the rubber to the moving part; S30: driving the moving part to move at a preset initial speed and driving the rubber to impact the impact part; S40: collecting the impact force received by the rubber; S50: collecting the deformation amount and recovery rate of the rubber after being impacted; and S60: evaluating the crashworthiness of the rubber according to the initial speed of the moving part, the impact force received by the rubber, and the deformation amount and recovery rate of the rubber after being impacted.

[0006] The rubber crashworthiness testing method provided by the present application sets a moving part and an impact part, adopts a horizontal impact mode to perform impact testing on rubber, and controls the initial speed at which the impact occurs, collects the impact force received by the rubber at different initial speeds, the deformation amount and recovery rate of the rubber after being impacted, and evaluates the crashworthiness of the rubber, so as to restore the stress conditions of rubber materials in actual use.

[0007] In another illustrative embodiment of the rubber crashworthiness testing method, step S10 comprises: S11: setting a base; S12: fixing the impact part to the base; and S13: setting a track on the base to enable the moving part to slide relative to the base along the impact direction and the opposite direction thereof.

[0008] In another illustrative embodiment of the method for testing the impact resistance of rubber, step S20 comprises: S21: providing a pressure sensor on the moving member; and S22: fixing the rubber on the pressure sensor, the pressure sensor being capable of measuring the impact force received by the rubber.

[0009] In another illustrative embodiment of the method for testing the impact resistance of rubber, step S40 specifically comprises collecting the measurement value of the pressure sensor when the rubber impacts the impact member.

[0010] In another illustrative embodiment of the method for testing the impact resistance of rubber, step S30 specifically comprises providing a driving member, the driving member being an electric motor or an electromagnetic ejection device and being capable of driving the moving member to move along the impact direction at a preset initial speed.

[0011] In another illustrative embodiment of the method for testing the impact resistance of rubber, the method further comprises S70: providing a speed sensor on the moving member, the speed sensor being capable of measuring the real-time moving speed of the moving member.

[0012] The present application also provides a device for testing the impact resistance of rubber, comprising a base, an impact member, a moving member, a driving member, and a pressure sensor. The impact member is fixed to the base. The moving member is movably arranged along an impact direction and the opposite direction thereof on the base. The driving member is capable of driving the moving member to move along the impact direction at a preset initial speed. The pressure sensor is fixed to the moving member, the pressure sensor being capable of fixing the rubber, and the moving member being capable of driving the rubber to impact the impact member when the moving member moves along the impact direction, and the pressure sensor being capable of measuring the impact force received by the rubber.

[0013] The device for testing the impact resistance of rubber provided by the present application can test the rubber by horizontal impact, and can control the initial speed of impact by the driving member, and can collect the impact force received by the rubber at different initial speeds by the pressure sensor, so as to restore the force condition of the rubber material in actual application.

[0014] In another illustrative embodiment of the device for testing the impact resistance of rubber, the driving member is an electric motor or an electromagnetic ejection device.

[0015] In another illustrative embodiment of the device for testing the impact resistance of rubber, the device further comprises a speed sensor, the speed sensor being provided on the moving member and being capable of measuring the real-time moving speed of the moving member.

[0016] In another exemplary embodiment of the device for testing the crashworthiness of rubber, the base comprises two cylindrical slide rails arranged in parallel along the impact direction. The moving part comprises two sliding portions arranged in interval along the impact direction, each of which is sleeved on the two cylindrical slide rails. BRIEF DESCRIPTION OF DRAWINGS

[0017] The following drawings are merely used for illustrating and explaining the present application, and do not limit the scope of the present application.

[0018] Figure 1 Flow chart of one exemplary embodiment of the method for testing the crashworthiness of rubber.

[0019] Figure 2 Exemplary diagram of the method for testing the crashworthiness of rubber.

[0020] Figure 3 Flow chart of part of the method for testing the crashworthiness of rubber.

[0021] Figure 4 Flow chart of part of the method for testing the crashworthiness of rubber.

[0022] Figure 5 Flow chart of another exemplary embodiment of the method for testing the crashworthiness of rubber.

[0023] REFERENCE NUMERALS 10 base 12 cylindrical slide rail 20 impact part 30 moving part 32 sliding portion 40 driving part 50 pressure sensor 60 speed sensor 70 rubber A impact direction DETAILED DESCRIPTION

[0024] In order to have a clearer understanding of the technical features, objectives and effects of the present application, the specific embodiments of the present application will be described in detail with reference to the drawings, in which the same reference numerals represent the same or similar parts having the same function.

[0025] In this document, "exemplary" means "serving as an example, instance, or illustration," and should not be construed as a preferred or advantageous implementation over other implementations. Thus, to the extent that a particular feature, structure, or characteristic is described in this document as being "exemplary," it is intended to convey that the feature, structure, or characteristic is one example implementation, and not necessarily the only implementation.

[0026] In order to make the drawings simple, only the parts related to the present application are shown in the drawings, which do not represent the actual structure of the product.

[0027] Figure 1 Flow chart of an exemplary embodiment of a method for testing the crashworthiness of a rubber. Figure 2 Exemplary flow chart of a method for testing the crashworthiness of a rubber. Refer to Figure 1 and Figure 2 A method for testing the crashworthiness of a rubber, comprising the following steps S10 to S60.

[0028] Step S10: providing a moving member 30 and an impact member 20, the moving member 30 being capable of holding a rubber 70, and the moving member 30 being capable of moving along an impact direction to drive the rubber 70 to impact the impact member 20. Figure 3 Exemplary flow chart of a part of a method for testing the crashworthiness of a rubber. Refer to Figure 2 and Figure 3 In an exemplary embodiment, step S10 comprises the following steps S11 to S13.

[0029] Step S11 : providing a base 10. The base 10 is flat and is convenient to be placed on a horizontal surface.

[0030] Step S12: fixing the impact member 20 to the base 10. The impact member 20 is used for the moving rubber 70 to impact.

[0031] Step S13: providing a track on the base 10 to enable the moving member 30 to slide relative to the base 10 along the impact direction and the opposite direction thereof.

[0032] Step S20: fixing the rubber 70 to the moving member 30. Figure 4 Exemplary flow chart of a part of a method for testing the crashworthiness of a rubber. Refer to Figure 2 and Figure 4 In an exemplary embodiment, step S20 comprises the following steps S21 and S22.

[0033] Step S21 : providing a pressure sensor 50 on the moving member 30.

[0034] Step S22: fixing the rubber 70 to the pressure sensor 50, the pressure sensor 50 being capable of measuring the impact force received by the rubber 70.

[0035] Step S30: driving the moving member 30 to move at a preset initial speed and driving the rubber 70 to impact the impact member 20. Refer to Figure 2 In an exemplary embodiment, a driving member 40 is provided, the driving member 40 being an electromagnetic ejection device and being capable of driving the moving member 30 to move at a preset initial speed along the impact direction. However, it is not limited thereto, in other exemplary embodiments, the driving member 40 can also be other driving devices, such as a motor.

[0036] Step S40: Collect the impact force received by the rubber 70. Specifically, the measured value of the pressure sensor 50 when the rubber 70 hits the impact piece 20 is collected.

[0037] Step S50: Collect the deformation amount and recovery rate of the rubber 70 after being hit.

[0038] Step S60: Evaluate the impact resistance of the rubber 70 according to the initial speed of the moving piece 30, the impact force received by the rubber 70, the deformation amount and recovery rate of the rubber 70 after being hit. Specifically, the deformation amount of the rubber 70 after being hit can be obtained by directly measuring the size of the rubber 70 after being hit, and the recovery rate of the rubber 70 can be obtained by measuring the size of the rubber 70 again after a predetermined time after the impact is completed and calculating it. In the illustrative embodiment, by testing 10 rubber samples, the following test data table is obtained. Sample No. Impact Force at Initial Speed 5 m / s (N) Impact Force at Initial Speed 10 m / s (N) Impact Force at Initial Speed 15 m / s (N) Deformation after Impact (mm) Recovery Rate (%) 001 250 500 750 2.5 85 002 245 490 735 2.7 80 003 255 510 765 2.3 90 004 240 485 720 2.8 75 005 245 490 740 2.6 82 006 250 500 750 2.5 85 007 255 515 770 2.2 92 008 240 485 725 2.9 70 009 245 490 740 2.6 82 010 250 500 750 2.5 85

[0039] By analyzing the above test data table, it can be concluded that as the initial speed increases, the impact force also increases linearly. This indicates that the rubber material can withstand greater force under high-speed impact, showing its good impact resistance.

[0040] The deformation and recovery rate after impact are important indicators for evaluating the impact resistance of rubber materials. Rubber sample 003 has a small deformation and a high recovery rate at all test speeds, indicating that it has better elasticity and anti-deformation ability. Rubber sample 008 has a large deformation and a low recovery rate after impact, indicating that the internal structure of the rubber sample is loose or contains more fillers, affecting its overall performance.

[0041] The impact resistance test method of the rubber provided by the present application sets the moving piece 30 and the impact piece 20, uses horizontal impact to test the rubber 70, and controls the initial speed when the impact occurs. The impact force received by the rubber 70 at different initial speeds, the deformation amount and recovery rate of the rubber 70 after being hit are collected to evaluate the impact resistance of the rubber 70, so as to reproduce the stress condition of the rubber material in actual application.

[0042] Figure 5 The flowchart of another illustrative embodiment of the impact resistance test method of the rubber. Referring to Figure 5 , the same or similar parts of the impact resistance test method in Figure 1 will not be repeated, and the difference is that the impact resistance test method further includes Step S70: Set a speed sensor 60 on the moving piece 30, and measure the real-time movement speed of the moving piece 30 through the speed sensor 60. The speed sensor 60 is a laser speedometer. By measuring the real-time movement speed of the moving piece 30, the test process can be calibrated, further improving the accuracy of the test results.

[0043] The application also provides a device for testing the crashworthiness of rubber 70, which comprises a base 10, an impact piece 20, a moving piece 30, a driving piece 40 and a pressure sensor 50. Figure 2

[0044] Figure 2 The impact piece 20 is fixed to the base 10. The moving piece 30 is movably arranged on the base 10 along an impact direction A and the opposite direction thereof. The driving piece 40 is capable of driving the moving piece 30 to move along the impact direction A at a preset initial speed. The pressure sensor 50 is fixed to the moving piece 30, and the pressure sensor 50 is capable of fixing the rubber 70, and driving the rubber 70 to impact the impact piece 20 when the moving piece 30 moves along the impact direction A, and the pressure sensor 50 is capable of measuring the impact force received by the rubber 70.

[0045] In an illustrative embodiment, referring to Figure 2 The base 10 comprises two cylindrical slide rails 12 which are arranged in parallel along the impact direction A. The moving piece 30 comprises two slide portions 32 which are arranged in parallel along the impact direction A, and each slide portion 32 is sleeved on the two cylindrical slide rails 12. In this way, the moving piece 30 can move smoothly and stably relative to the base 10.

[0046] The device for testing the crashworthiness of rubber provided by the application can test the rubber 70 by horizontal impact through the moving piece 30 and the impact piece 20, and can control the initial speed of the impact through the moving piece 30, and can collect the impact force received by the rubber 70 at different initial speeds through the pressure sensor 50, so as to restore the stress condition of the rubber material in actual application.

[0047] In an illustrative embodiment, referring to Figure 2 The driving piece 40 is an electromagnetic ejection device. However, it is not limited thereto, and in other illustrative embodiments, the driving piece can also be other driving devices, such as a motor In an illustrative embodiment, referring to Figure 2 The device for testing the crashworthiness further comprises a speed sensor 60 which is arranged on the moving piece 30 and is capable of measuring the real-time moving speed of the moving piece 30. In an illustrative embodiment, the speed sensor is a laser speed sensor, and the real-time moving speed of the moving piece can be measured, so that the test process can be calibrated, and the accuracy of the test result can be further improved.

[0048] ​​It should be understood that although the present specification is described in terms of various embodiments, not every embodiment need necessarily include every independent technique described herein, and description of a particular feature in a particular embodiment is equally applicable to other embodiments unless specifically stated otherwise. Moreover, it should be understood that the description of a particular embodiment herein can include features that are not present in every embodiment, and features of one embodiment can be used in other embodiments as well. Each embodiment can be used in combination with other embodiments, unless specifically stated otherwise.

[0049] The above detailed description of a series of detailed descriptions is only a specific description of the feasible embodiments of the present application, and is not used to limit the protection scope of the present application. Any equivalent implementation or change made without departing from the spirit of the present application, such as the combination, division or repetition of features, should be included in the protection scope of the present application.

Claims

1. A method for testing the impact resistance of rubber, characterized in that, Includes the following steps: S10: A moving part and an impacting part are provided, wherein the moving part can fix the rubber and the moving part can move along an impact direction to drive the rubber to impact the impacting part; S20: Fix the rubber to the moving part; S30: Drive the moving part to move at a preset initial velocity and drive the rubber to impact the impacting part; S40: Collect the impact force received by the rubber; S50: Collect the deformation and recovery rate of the rubber after impact; and S60: Evaluate the impact resistance of the rubber based on the initial velocity of the moving part, the impact force on the rubber, the deformation and recovery rate of the rubber after the impact.

2. The method for testing the impact resistance of rubber as described in claim 1, characterized in that, Step S10 includes: S11: Set a base; S12: Fix the impact member to the base; and S13: A track is provided on the base so that the moving part can slide relative to the base along the impact direction and its opposite direction.

3. The method for testing the impact resistance of rubber as described in claim 1, characterized in that, Step S20 includes: S21: A pressure sensor is provided on the moving part; and S22: Fix the rubber to the pressure sensor, which is capable of measuring the impact force on the rubber.

4. The method for testing the impact resistance of rubber as described in claim 3, characterized in that, Step S40 specifically involves: collecting the measured value of the pressure sensor when the rubber impacts the impactor.

5. The method for testing the impact resistance of rubber as described in claim 1, characterized in that, Step S30 specifically involves: setting a driving component, which is a motor or an electromagnetic catapult device, and is capable of driving the moving part to move along the impact direction at a preset initial velocity.

6. The method for testing the impact resistance of rubber as described in claim 1, characterized in that, The impact resistance test method also includes S70: setting a speed sensor on the moving part, and measuring the real-time movement speed of the moving part through the speed sensor.

7. A device for testing the impact resistance of rubber, characterized in that, include: A base (10); An impact element (20) is fixed to the base (10); A moving part (30) is movably disposed on the base (10) along an impact direction (A) and the opposite direction; A drive member (40) is capable of driving the moving member (30) to move along the impact direction (A) at a preset initial velocity; as well as A pressure sensor (50) is fixed to the moving part (30). The pressure sensor (50) can fix the rubber. When the moving part (30) moves along the impact direction (A), it can drive the rubber to impact the impacting part (20). At the same time, the pressure sensor (50) can measure the impact force on the rubber.

8. The rubber impact resistance testing device as described in claim 7, characterized in that, The driving component (40) is a motor or an electromagnetic catapult device.

9. The rubber impact resistance testing device as described in claim 7, characterized in that, The impact resistance testing device also includes a speed sensor (60), which is disposed on the moving part (30) and is capable of measuring the real-time speed of the moving part (30).

10. The rubber impact resistance testing device as described in claim 7, characterized in that, The base (10) includes two cylindrical slide rails (12), which are arranged parallel to each other along the impact direction (A); the moving part (30) includes two sliding parts (32), which are arranged at intervals along the impact direction (A), and each sliding part (32) is respectively sleeved on the two cylindrical slide rails (12).

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