Finite element analysis of seal mechanism using SMA for Mars sample return

Xiaoqi Bao; Paulo Younse

doi:10.1117/12.2045327

10 April 2014 Finite element analysis of seal mechanism using SMA for Mars sample return

Xiaoqi Bao, Paulo Younse

Proceedings Volume 9061, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2014; 90613N (2014) https://doi.org/10.1117/12.2045327
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2014, San Diego, California, United States

Abstract

Returning Martian samples to Earth for extensive analysis is of great interest to planetary science community. Current Mars sample return architecture would require leaving the acquired samples on Mars for several years before being retrieved by subsequent mission. Each sample would be sealed securely to keep its integrity. A reliable seal technique that does not affect the integrity of the samples and uses simple low-mass tool is required. The shape memory alloy (SMA) seal technique is a promising candidate. The performances of several primary designs of SMA seal for sample tubes were analyzed by finite element (FE) modeling. The results of thermal heating characteristics had been reported in a previous presentation this paper focus on the preparation and actuation of SMA plugs, the seal pressure, and the stress and strain induced in the sealing procedure with various designs.

Citation Download Citation

Xiaoqi Bao and Paulo Younse "Finite element analysis of seal mechanism using SMA for Mars sample return", Proc. SPIE 9061, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2014, 90613N (10 April 2014); https://doi.org/10.1117/12.2045327

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