633 results about "Elastic distortion" patented technology

The invention provides a macroscopic finite element simulation analysis method and device for a sealing element considering plastic deformation, and belongs to the field of sealing element design. The method comprises the following steps: acquiring an engineering stress-strain curve of a plastic material in a compression state; converting the engineering stress-strain curve into a real stress-strain curve; determining a yield limit, and taking a strain point corresponding to the yield limit as a demarcation point of elasticity and plastic deformation; an elastic section of a real stress-strain curve is extracted, the elastic modulus is calculated, and the Poisson's ratio is obtained through axial and transverse strain measurement in a uniaxial compression test; a true stress-strain curve plastic section is extracted, and a multi-linear isotropic hardening model is established; constructing a complete elastic-plastic constitutive model covering the elastic deformation area and the plastic deformation area; the stress distribution, the strain response and the contact performance of the plastic sealing element in a compression deformation state are simulated. According to the method and the device provided by the invention, the problem that the result does not conform to the reality due to the fact that only elastic modulus and Poisson's ratio are used in existing sealing element simulation can be solved.

The invention discloses a deterministic cutting compensation processing method for an infrared thin-wall optical element. The method comprises the following steps: S1, acquiring an initial surface shape of a workpiece; the method comprises the following steps: measuring an initial surface shape of a thin-wall optical element to be machined through an ultra-precision machine tool in-situ measurement technology to obtain a surface shape outline rho (x, y), and calculating a material removal amount deltaz (x, y) at each coordinate position according to a designed surface shape outline z (x, y), deltaz (x, y) = rho (x, y)-z (x, y); s2, elastic deformation prediction of clamping stress; based on a finite element simulation model, three-dimensional space numerical distribution simulation is conducted on clamping force distribution in the machining process, and element elastic deformation epsilon (x, y) caused by clamping stress is predicted; integrating the elastic deformation amount with the initial material removal amount to obtain a new material removal amount z '(x, y); s3, deformation prediction of the machining residual stress element; s4, generating a non-uniform material removal compensation track; and S5, non-uniform cutting compensation machining based on slow cutter servo is carried out.

The present invention relates to an electrically conductive contact pin provided with an elastic portion, wherein the elastic portion includes: a plurality of straight portions; and a plurality of curved portions connecting the straight portions adjacent to each other above and below, and further includes a slit portion for dividing the curved portions into split beam portions, a stopper for limiting an elastic deformation position, or a groove portion for forming a cut portion on the inner surface of the curved portions. The purpose of the present invention is to improve the inspection reliability of an inspection object and to prevent damage to the inspection object by facilitating elastic deformation.

The invention provides a lightweight harmonic speed reducer, and relates to the technical field of speed reducers. A flexible gear is respectively connected with a wave generator and an inner structural body of a crossed roller bearing through an elastic meshing interface; an inner gear matched with the flexible gear in tooth shape is arranged on the inner side of the inner structure body. The invention has the beneficial effects that the internal gear and the crossed roller bearing are integrally designed, so that the number of assembly components is reduced, the volume of parts is reduced, the axial size is reduced, the structural rigidity is improved, the stress distribution of a transmission interface is more uniform, the service life is effectively prolonged, and the assembly difficulty is reduced; the crossed roller bearing is made of a polymer composite material, and the weight of the crossed roller bearing is reduced by 30-50% compared with that of a traditional metal material, so that the weight of the harmonic speed reducer can be greatly reduced, the burden of a driving motor is reduced, the service life of the driving motor is prolonged, the elasticity is increased due to the design of the axial hollow roller, and the precision error and the assembly error of parts can be absorbed; and a gap between the roller and the track is eliminated through elastic deformation, so that transmission without a back gap is achieved.

The invention discloses a thin-wall structure milling residual stress three-dimensional distribution calculation method considering elastic deformation. The method comprises the following steps that 1, a ball-end milling cutter multi-axis milling mechanical model is constructed; 2, the actual milling depth of the titanium alloy thin-wall structure on different cutter location points on the cutter path line is obtained; 3, constructing a gradient distribution prediction model of the residual stress of the multi-axis milling titanium alloy, and predicting a prediction model coefficient of any group of milling process parameters through an RBF neural network; wherein the milling depth is the actual milling depth obtained in the step 2; 4, predicting the prediction model coefficients of different cutter location points of the titanium alloy thin-wall structure one by one; and a three-dimensional distribution model of the milling residual stress of the thin-wall structure considering the elastic deformation is obtained through a multiple linear regression method. According to the method, the problem of poor residual stress prediction precision of the titanium alloy complex thin-wall structure under the condition of elastic deformation during processing is solved.

The utility model relates to the technical field of aperture devices, and relates to an aperture module, a lens device and photographic equipment. The aperture module comprises a fixing seat and a rotating disc, the fixing seat is provided with an inner cavity, the rotating disc is axially and rotatably arranged in the inner cavity, a containing groove communicated with the inner cavity is further formed in the fixing seat and is opposite to the rotating disc, a gap is formed between the rotating disc and the fixing seat, a silencing part is installed in the containing groove, and at least part of the silencing part extends into the inner cavity through the containing groove. And the silencing part penetrates through the gap to be in contact with the turntable, and is extruded by the turntable to generate elastic deformation. The rotary disc can rotate around the central axis in the inner cavity relative to the fixing base under the action of external force, meanwhile, the rotary disc also rotates relative to the silencing part, the rotary disc is indirectly connected with the fixing base through the silencing part, vibration of the rotary disc is absorbed through elastic deformation of the silencing part, and then the purposes of shock absorption and noise reduction are achieved when the aperture module acts. And the requirement of photographic equipment on silencing of the aperture during video recording is met.

To provide a copper alloy excellent in conductivity while having a sufficiently large elastic deformation amount with a low Young's modulus and unlikely to cause a plastic deformation even under a large deformation.SOLUTION: A copper alloy has a composition including 15-57 mass% Zn, 12 mass% or less Al, satisfying A+5×B≥30 and A+3.5×B≤57 in which the Zn content is A mass% and the Al content is B mass%, and a balance Cu with inevitable impurities. A volume fraction in a β phase is 50% or more. an average of KAM (Kernel Average Misorientation) values of the β phase is 2.0° or less obtained when a measurement area of 1 mm2 or more is measured at a measurement interval 1 μm step by an EBSD method and measured excluding a measurement point with a CI value of 0.1 or less analyzed by data analysis software OIM.SELECTED DRAWING: None

The invention discloses a joint surface contact stiffness calculation method considering interaction of a micro-bulge and a matrix, which is characterized in that additional deformation generated by the matrix is calculated on the basis of an elastic theory and micro-bulge stress analysis, the actual normal deformation of the micro-bulge is obtained, and then the critical sectional areas of plastic deformation, elastic plastic deformation and elastic deformation of the micro-bulge are calculated. The interaction is considered on the basis of previous research, the real contact area and the contact load expression of the joint surface are obtained through integration, and the maximum contact sectional area is obtained according to the actual load condition. The contact stiffness of the joint surface is obtained by integrating the stiffness of the micro-convex bodies with elastic deformation and elastic plasticity, and the accuracy of a theoretical model is verified by comparing modal simulation with an experimental result. Compared with other technologies, the method can more accurately predict the theoretical stiffness value of the joint surface.

A controller includes a sensor that uses an elastically deformable elastic member, detects user's contact with or deforming action of the elastic member, and outputs an electric signal based on the detected contact or deforming action in question.

The invention provides an X-type six-roller mill plate shape forecasting method, and belongs to the technical field of metallurgical rolling. The method comprises the following steps: collecting equipment parameters of the X-type six-roller mill, strip characteristic parameters and corresponding rolling process parameters; dividing units and solving influence coefficients; solving the plastic deformation of the strip; carrying out iterative calculation on the roll system elastic deformation model and the strip plastic deformation model until convergence; forecasting the transverse distribution value of the pre-tensile stress of the strip during rolling; and strip outlet plate shape transverse distribution during rolling is forecasted. According to the method, on the basis of the strip plastic deformation model and the roll system elastic deformation model, the pre-tensile stress after rolling is calculated, and then strip shape forecasting is achieved.

The invention discloses an oversize structure deformation detection method and system, a medium and a program product, and the method comprises the steps: collecting multi-source detection data and deformation detection data of a structure in a maximum load period and a minimum load period; calculating a deformation difference value to obtain a deformation difference value range; in the deformation difference value range, the load transportation equipment is controlled to apply and unload a preset load according to a preset load step length; acquiring deformation data under each preset load step length to obtain deformation recovery process data, and determining an elastic deformation interval according to the deformation recovery process data; when the deformation detection data is within the elastic deformation interval, the load transportation equipment is controlled to unload the structure according to a preset unloading step length, and the deformation recovery rate is calculated; and when the deformation recovery rate is lower than a preset threshold value, determining the corresponding deformation area as a key monitoring area. The method and the device are used for improving the accuracy of structure deformation detection, so that the accuracy and the timeliness of structure safety evaluation are improved.

The invention relates to an aperture structure, in particular to an elastic anti-backlash variable aperture structure and photographic equipment, which comprises a fixing assembly, the fixing assembly is provided with a turntable and an aperture blade, the aperture blade is driven between the turntable and the fixing assembly through a guide structure, and the fixing assembly is provided with an elastic deformation piece. The elastic deformation part abuts against the fixing assembly and the aperture blade so as to limit the rotation position of the aperture blade. The elastic deformation piece is installed on the fixing assembly, the elastic deformation piece abuts against the aperture blade, the rotation position of the aperture blade is limited, the aperture blade is kept in the pressed state in the direction of the acting force under the influence of the elastic acting force of abutting contact, and therefore the aperture blade cannot shake easily at the position of the installation gap; therefore, the movement of the aperture blade can become more stable, noise generated by gap friction collision is reduced, abrasion to the mounting position is reduced, and the aperture adjustment precision is guaranteed, so that the quality of photographing output of photographic equipment is guaranteed, and convenience is brought to a user.

A mechanical metamaterial adaptive to an applied stress comprises a plurality of meta-capsules arranged in a lattice structure. Each meta-capsule comprises a plurality of rigid parts and a plurality of elastically deformable soft parts coupled to the plurality of rigid parts, such that at least a subset of the plurality of meta-capsules undergo a reconfiguration under the applied stress. The reconfiguration includes a deformation of the soft parts of the meta-capsules in the subset, and a reduction of a gap between adjacent rigid parts of the meta-capsules in the subset, thereby increasing a stiffness of the mechanical metamaterial from a first stiffness to a second stiffness when the adjacent rigid parts come into contact.

To reduce the number of components and the number of fixation manhours for fixing an object component to a mating member.SOLUTION: A fixation structure is a structure for pressing and fixing a core 2 onto a heat sink 1 by a pressing member 3. The heat sink 1 includes engaged parts 11 with which engaging parts 32 can engage. The pressing member 3 includes: the engaging parts 32; elastic deformation parts 32a that are elastically deformed through the engagement of the engaging parts 32 with the engaged parts 11 to exhibit deformation reaction force; and first pressing parts 33 that come into contact with the core 2 to press the core 2 in a direction different from a direction toward the heat sink 1. The pressing member 3 is configured to press the core 2 on the heat sink 1 by being pressed against the core 2 through the deformation reaction force. The first pressing parts 33 are disposed so that the at least two first pressing parts 33 face to each other while sandwiching the core 2.SELECTED DRAWING: Figure 1

The present invention belongs to the technical field of rolling production, and particularly relates to a method for setting rolling force and rolling torque in the full deformation zone of strip cold rolling. The method mainly includes the following steps: S1: Determine rolling parameters; S2: Divide the deformation zone; S3: Calculate the entrance thickness of the plastic deformation zone and the exit thickness of the plastic deformation zone; S4: Calculate the neutral angle parameter; S5: Calculate the total rolling force per unit width in the rolling deformation zone; S6: Calculate the torque per unit width; S7: Set the rolling force and rolling torque in the rolling process according to the finally obtained calculated values of the total rolling force per unit width in the rolling deformation zone and the calculated value of the torque per unit width. In the calculation process of the method of the present invention, the difference in rolling pressure between the plastic deformation zone and the elastic deformation zone is considered and distinguished, the influences of the rolling plastic zone and the elastic deformation zone are comprehensively considered, and the calculation error value of the rolling force setting is within 8%.

According to the machining method and system for the stainless steel rectangular groove plate, the material thickness and elastic modulus parameters of a 316L stainless steel thin plate are obtained, the stress distribution state in the machining process is monitored in real time through a sensor, and if the stress value exceeds a preset threshold value, the cutting force and machining speed parameters are adjusted; a support vector machine algorithm is adopted to analyze the nonlinear relation between the material thickness and the elastic deformation, and an optimized mechanical parameter control model is obtained; according to stress control data output by the mechanical parameter control model, the machining temperature and vibration frequency information of a contact area of a tool and a workpiece is obtained, if the vibration frequency exceeds a stable machining range, the rotating speed and the feeding amount of a spindle are adjusted in real time, and the influence of thermal deformation on the groove depth precision is corrected through a temperature compensation algorithm; and determining a dynamic processing parameter combination adapted to the characteristics of the thin plate. Intelligent control over the thin plate precision machining process is achieved, and the machining precision and efficiency are effectively improved.

The utility model provides a movable scroll plate, a compressor and refrigeration equipment. The movable scroll plate comprises a movable scroll tooth and a movable scroll tooth, the dynamic vortex teeth are arranged on one side of the end plate in the axial direction of the end plate; the buffering groove is formed in the side, away from the dynamic vortex teeth, of the end plate in the axial direction of the end plate and is close to the peripheral wall of the end plate; the buffer groove comprises a first groove section and a second groove section which are communicated with each other, at least one part of the first groove section extends in the circumferential direction of the end plate, and at least one part of the second groove section extends in the radial direction of the end plate. The thickness of the position, close to the peripheral wall, of the end plate is reduced, so that the rigidity of the position, close to the peripheral wall, of the end plate is effectively reduced, elastic deformation of the axial contact area of the end plate and the end face of the static scroll plate is increased, the effective contact area between the end plate and the end face of the static scroll plate is increased, and contact surface pressure is reduced; therefore, the wear resistance of the end plate and the end face of the static scroll plate in the operation process of the compressor is effectively improved, wear is reduced, the service life of the compressor is prolonged, and the performance of the compressor is improved.

A mounting unit (10) for a radar proximity sensor (50) is provided, comprising a mounting body (20) with a through-opening (24) forming the signal exit area; a deformation element (30, 130) which can be inserted into the through-opening (24) in a form-fitting manner and is made of an elastic material in order to shield external forces acting on the radar proximity sensor (50) and to distribute the acting force over the entire surface of the radar proximity sensor (50) onto the fastening body (20), wherein the fastening body (10) has a resiliently elastic shape in order to convert the acting force into movement and deformation and to dampen it, wherein the fastening body (20) is connected to a fixed bearing in order to compensate for the force effect, wherein the fastening body (20) is designed to receive the radar proximity sensor (50), wherein the radar proximity sensor (50) can be mounted on the fastening body (20).

The utility model provides a vibrating screen mesh tensioning device which comprises a tensioning beam which is formed by modularly welding a preformed flange plate, a seat plate, a hollow rectangular pipe and a guide plate. The flange plates are welded to the two ends of the hollow rectangular pipe respectively, the base plate is perpendicularly fixed to the surface of the hollow rectangular pipe and integrally welded to the material guide plate, and the flange plates are detachably connected with side plates of the vibrating screen. The multiple elastic tensioning assemblies are sequentially arranged on the tensioning beam in the extending direction of the tensioning beam. The elastic tensioning assembly comprises an elastic body and a tension adjusting assembly, the tension adjusting assembly is connected with a screen mesh of the vibrating screen, and adjustable tensioning force is generated by compressing the elastic body so as to fix the screen mesh. According to the structure, the dynamic load and energy consumption of the screen body can be remarkably reduced, and light weight is achieved while the bearing capacity is guaranteed. The tensioning force is dynamically adjusted by compressing the elastic body, so that the screen is always in an elastic deformation range, looseness caused by plastic deformation is avoided, and the screen is more stable.

To provide an imaging device with a structure that can suppress size expansion. [Solution] An elastic dustproof member 50 is provided between the base portion 41 and the substrate 30. The elastic dustproof member 50 is cylindrical in shape and has a first frame portion 51 located on the base portion 41 side, a second frame portion 52 that comes into contact with the substrate 30, and a flexible portion 53 that is connected to the first frame portion 51 and the second frame portion 52 and changes the distance between the first frame portion 51 and the second frame portion 52 by elastic deformation. The center line of the cylindrical portion that constitutes the inner wall of the lens barrel 20 is defined as the central axis CL, and the dimensions of the first frame portion 51 and the second frame portion 52 in a direction perpendicular to the central axis CL and also perpendicular to the extension direction of the first frame portion 51 and the second frame portion 52 are defined as the first width dimension W1 and the second width dimension W2, respectively, such that the second width dimension W2 is smaller than the first width dimension W1.

The invention provides a sliding bearing oil film thickness obtaining method and device, and the method comprises the steps: building a micro-contact roughness model of a sliding bearing, and obtaining the contact pressure and contact area of a shaft of the bearing and a bearing bush rough peak according to the micro-contact roughness model; establishing a wear model of the sliding bearing, and obtaining the wear depth hw of the sliding bearing according to the wear model, the contact pressure and the contact area; obtaining the elastic deformation hE of the sliding bearing; according to the included angle between the axis of the sliding bearing journal and the center line of the bearing and the included angle between the circle center connecting line of the front and rear end faces of the journal and the center connecting line of the bearing and the journal, the journal inclination h '0 is obtained; and obtaining the thickness h of the oil film of the sliding bearing according to hw, he and h '0. According to the method, the influence of factors such as abrasion, elastic deformation and journal inclination in the working process of the bearing on the oil film thickness is fully considered, the oil film thickness of the sliding bearing can be accurately calculated and monitored, a theoretical basis is provided for design of the sliding bearing, and reliable operation of the bearing is guaranteed.

The utility model discloses an anti-blocking screening mesh surface structure for screening gravel. The anti-blocking screening mesh surface structure comprises a screening surface with screening holes; hole adjusting bulges are arranged on the axial outer surfaces of the rolling rods, and the rolling rods correspond to the sieve holes which are longitudinally distributed in the same row on the sieve surface; the vibrating screen further comprises a mounting frame with mounting grooves, and the left side and the right side of the screen face are mounted in the mounting grooves of the mounting frame through elastic pieces capable of generating elastic deformation. When the screen holes are blocked by blocking objects, the side edges, away from the screen face, of the electric telescopic rod A and the electric telescopic rod B do not clamp the screen face any more, the screen face is supported in the mounting frame through the elastic pieces, rolling rods rotate to drive hole adjusting protrusions to jack up the blocking objects, the screen face is buffered through the elastic pieces at the moment, and the situation that the blocking objects are jacked up by the hole adjusting protrusions excessively rigidly, and the screen face is damaged is avoided. The problem that in the jacking process of a fixing rod, excessive hard jacking is likely to be generated on a screen, and consequently damage is caused is solved.

The invention relates to the field of transportation devices, in particular to a feeding vibration disc. In order to solve the problem that a feeding port of a feeding rail of an existing feeding vibration disc is prone to being blocked, and consequently materials rise unsmoothly, a matching assembly of an elastic plate, a movable groove and a spring is arranged at the bottom of the vibration disc, and the vibration disc and a vibration mechanism base are connected through an elastic connecting structure with the adjustable elastic length. When the weights of the fed materials are different, the gravity condition of the materials can promote the vibration disc to move up and down, so that the length of the elastic deformation section of the elastic plate is adjusted by changing the accommodating length of the elastic plate in the movable groove, the elastic force of the elastic plate is changed, and the twisting and swinging degree of the vibration disc is adjusted; according to the feeding vibration disc, the feeding requirements of materials with different weights are met, the feeding universality of the feeding vibration disc on the materials with the different weights is improved, the enough feeding conveying effect can be achieved even for the materials with the large weight, and the situation that the conveying rail in the vibration disc is stuck with the materials can be effectively avoided.

According to one embodiment, a suspension assembly includes a support plate, a wiring member provided on the support plate and including an elastically deformable gimbal portion including a tongue portion on which a magnetic head is mounted and an outrigger connected to the tongue portion, and a viscoelastic material filled into a gap between the outrigger and the support plate and forming a damper.

To provide a cushion brush that can improve cushion property of a brush surface.SOLUTION: A cushion brush 10 includes a brush surface 30 and a base 20 for fixing the brush surface 30. The brush surface 30 includes: a surface part 32 including a plurality of bristles 31; and an inner surface part 33 installed on an inner side from the surface part 32. Both the surface part 32 and inner surface part 33 have elasticity. The surface part 32 and the inner surface part 33 are elastically deformable relatively to each other.SELECTED DRAWING: Figure 3

This application discloses a method, apparatus, and device for solving the motion response of a circular permeable elastic structure. The method includes: determining the permeability effect, elastic deformation, and coupling equation of fluid motion in the fluid domain of the circular permeable elastic structure; determining the velocity potential of the outer and inner regions of the circular permeable elastic structure; constructing the vertical displacement equation of the circular permeable elastic structure with the vertical coordinates at zero; obtaining the modal eigenvalues ​​of the outer region velocity potential through the outer region velocity potential, and obtaining the modal eigenvalues ​​of the inner region velocity potential through the inner region velocity potential and the coupling equation, which are used as the modal eigenvalues ​​in the vertical displacement equation; and solving for the modal amplitude in the vertical displacement equation. Thus, the vertical displacement of the circular permeable elastic structure can be quantitatively output, providing data support for the vibration control of thin-film floating photovoltaic platforms.

Provided is a ventilation member that is suitable for improving the ease of elastic deformation of an insertion part when the insertion part is inserted into an opening of a housing. This ventilation member (10) is provided with a support body (4a) and a ventilation membrane (2). The support body (4a) includes a base portion (11) and a leg portion (12) that support the ventilation membrane (2). The leg part (12) has a plurality of insertion parts (21) and claw parts (23). In a plane (A) orthogonal to the central axis (O) of the support body (4a) and passing through the root portion of the insertion part (21), when an imaginary circle passing through both end portions (21p) in the width direction of the inner surface (21c) of the insertion part (21) and centered on the central axis (O) is defined as a first imaginary circle (C1), the inner surface (21c) of the insertion part (21) has a protruding part (21d) that protrudes further toward the central axis (O) than the first imaginary circle (C1). The ratio of the length in the radial direction of the claw section (23) to the length in the axial direction of the insertion section (21) is from 0.3 to 0.5 (inclusive). In the plane (A), the maximum length of the protruding portion (21d) in the radial direction is 0.1 mm or more and 1.5 mm or less.