Abstract

Nitinol, a unique shape memory alloy (SMA), exhibits remarkable properties such as superelasticity and the ability to recover its original shape after deformation, making it ideal for a range of applications in biomedical devices, actuators, and aerospace components. However, modeling the complex behavior of Nitinol in finite element analysis (FEA) requires careful consideration due to its nonlinear properties. This presentation works through a full material calibration of NiTiNol on the 3DEXPERIENCE platform. The integration of advanced material testing data into the simulation environment enhances model accuracy, while the application of optimization techniques and post-processing tools in both Abaqus CAE and 3DEXPERIENCE is discussed to ensure reliable and efficient design outcomes.

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Presenter Bio

Paul Jermihov, Sr. Solution Consultant, TriMech Solutions & Nuno Rebelo, Owner, Nuno Rebelo Associates LLC

Paul specializes in advanced structural computational simulation in the biomedical, automotive and manufacturing market sectors. BS in biomedical engineering from Michigan Tech, and MS and PhD from the University of Iowa in biomedical engineering with an emphasis on computational mechanics. He has previously worked for Dassault and Medtronic. He loves working with clients and developing state-of-the-art simulations that are pragmatic and useful.

Nuno Rebelo received his PhD in Mechanical Engineering from the University of California at Berkeley in 1980.  For most of his professional life, he has been involved in both the software development and in the industrial application of finite element methods.  From1984-2001, he was a member of the development staff of the Marc and the Abaqus finite element codes, during which among others, he worked on contact algorithms, material modeling and stabilization methods. From 1989 until 2018, he opened and was the Director of Technical Sales of what became the SIMULIA West Center of Excellence. In this capacity he managed a group of engineers dedicated to helping customers solve difficult problems in varied industries such as aerospace, life sciences and high tech.  In 2018 he retired and continues to do consulting work through Nuno Rebelo Associates LLC. He has been a member from the beginning of ASME’s V&V 40 Standards Subcommittee, dedicated to medical devices.  For more than 20 years he has been involved with FE analysis of medical devices and he wrote the Nitinol material model available in Abaqus.