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FEM Analysis on Thermal Fatigue Life of CCGA Column Under Compressive Load
Author(s): 
Pages: 333-336
Year: Issue:  6
Journal: Electronics Process Technology

Keyword:  Thermal fatigue lifeFinite element;
Abstract: Compressive load effect on CCGA devices for space applications is analyzed. CCGA column was regarded as a target, the nonlinear finite element method and the unified visco-pasctic Anand equation were employed to develop the 3D finite element model base on hest strain damage. The effect of compressive load on thermal fatigue life was studied using a modified Coffin-Manson relationship. Results indicate that compressive load does not appear to affect the equivalent stress under Thermal cycles, but fatigue life is significantly degraded with equivalent strain pick up cumulate by compressive load. Reduce compressive load can improve the fatigue life of CCGA column.
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