Computer-implemented method of simulating performance of e.g. endovascular stent-graft, involves partitioning model such that material models simulate material behaviour in units of object model of super elastic tension and compression

Novelty - The method involves performing (S8) numerical analysis using the object model and material models together to simulate (S7) behavior of the object e.g. exotic material such as Nitinol wire material under defined conditions. The object model is partitioned (S5) such that first material model is used to simulate the material behavior in units of object model subject to super elastic tension. The second material model is used to simulate the material behavior in units of object model subject to super elastic compression.

Use - Computer-implemented method of simulating performance of object made of material e.g. superelastic material such as nickel- titanium metal alloys used in product (claimed) e.g. medical devices such as vascular implant such as endovascular stent-graft. Can also be used in industrial, consumer, and aerospace applications.

Advantage - The method using partitioned model is more accurate over the range of tensile and compressive conditions. The model is used in an iterative design process to achieve a product meeting desired performance specifications. The method produces more efficient design process and enhanced reliability.