6 results about "Hyperelastic material" patented technology

The application discloses a phase transition super-elastic material topology optimization method based on a nonlinear constitutive model and belongs to the technical field of intelligent material structure design and multi-physical field optimization. The method comprises the following steps: establishing a super-elastic constitutive model containing a martensitic volume fraction to describe the coupling relationship between material phase transition behavior and mechanical properties; constructing a topology optimization model with the minimum structural flexibility as an objective and the volume fraction and a balance equation as constraints; adopting an additional super-elastic technology of dynamic reconstruction to solve the numerical instability problem in the optimization process; performing sensitivity analysis through an adjoint vector method; and obtaining an optimal topology configuration through iterative solution by using an optimal criteria method. The application can efficiently and stably realize the structure optimization of the phase transition super-elastic material, significantly improves the calculation efficiency and numerical stability of the optimization process, and is suitable for the structure design of intelligent materials such as shape memory alloys in the fields of aerospace, medical devices and the like.

The application discloses a kind of simulation dinosaur three-dimensional modeling optimization method and system, method constructs rigid body skeleton system based on Lagrange dynamics;According to the muscle layer of super-elastic material of anatomical attachment point, the displacement field is calculated using position-based dynamics method;Skin layer is constructed outside, Cauchy stress is projected to grid vertex, and wrinkle and scale texture are dynamically generated according to principal strain;The grid simplification degree and physical simulation accuracy of corresponding area are dynamically adjusted by calculating perceptual importance weight;Establish the quadratic programming problem with anatomical constraint to realize motion reorientation and angular momentum distribution;And construct deformation prediction cache model to carry out online constraint correction.The application realizes the unity of high-precision biological feature restoration and high-efficiency real-time rendering.

We provide a bio-anchor that can be implanted and removed with minimal invasiveness. [Solution] The bio-anchor 1 is a bio-anchor that is incorporated into a living body and includes a cylindrical sleeve 2 having a through hole 10 extending from the outside to the inside of the living body, and a pin 3 that is inserted into the through hole and expands the sleeve. The sleeve may be made of a superelastic material, and a slit extending parallel to the through hole may be formed in at least a part of the sleeve. Only one slit may be formed and may extend in the direction of the opening of the through hole.

A kind of deformation detection method of flexible constant force clamping mechanism under displacement input, after the two-dimensional grid model of the flexible constant force clamping mechanism to be measured is constructed, based on the Mooney-Rivlin second-order strain energy function model of super-elastic material and initialization model parameters are generated according to boundary constraint condition and load setting;Based on the virtual work principle discretization equation under the static equilibrium state of continuum, using the displacement control method based on displacement increment iteration, the action point of load application, i.e. control point is handled by displacement application and the displacement increment of corresponding non-constrained point is solved, then the node position coordinates and model coefficients are updated until the convergence criterion is met;Finally, the node deformation solution meeting the equilibrium equation is obtained, and the node displacement, internal stress and other data of the process are processed and charted.The present application can quickly and conveniently model similar examples with simple parameter setting, and obtain the structure deformation condition and force-displacement output characteristic results with high precision.

The present technology is directed to implantable medical devices comprising an electrical circuit for powering one or more active components of the device, such as an actuation element, an engine, or a sensor. The electrical circuit can include one or more inductors having a plurality of receiving coils that generate a current in response to being exposed to an electromagnetic field. The current generated by the receiving coils can be used to directly or indirectly power the one or more active components. The inductors can have one or more wires having a non-concentric configuration such that, in addition to generating the current for powering the device, the receiving coils also anchor a portion of the device when it is implanted. For example, the receiving coils can be at least partially composed of a superelastic material such that they exhibit superelastic properties at body temperature.