Semiconductor Bridge Ignition Of Thermal Analysis And Structural Optimization

FEA software acting as a platform to analyze and evaluate initiator development can provide it with accurate guide line of safety, reliability and economy.This article used FEA numerical analysis to simulate temperature field of maximum no-fire power test of semi-conductor bridge initiator based on optimization development, and bring improved plan, then, demonstration test was achieved.The main content is as follows:1. Summarize the development and application of FEM , then track and describe the theory development and project application of thermal analysis in the world.2. Semi-conductor bridge initiator was applied abroad as semi-conductor technology develop fast. This article interpret function and structure property of semi-conductor bridge initiator.3. Mathematics model of FEA was constructed according to the structure of semi-conductor bridge initiator(electrode plug is glass ), and analyzing circumstance factor of maximum no-fire power, sampling geometric model, defining initial and boundary condition, numerical calculating were achieved. At last, test was promoted to verify its correctness.4. Optimization was achieved according to numerical result of semi-conductor bridge initiator, and optimize semi-conductor bridge initiator, then, did thermal analysis, evaluated optimization plan.5. Physical test was achieved to verify the optimization of semi-conductor bridge initiator, test result indicate that electrode plug material changed from glass to ceramics apparently improved heat conduct, and this can meet the test requirement of maximum no-fire power specified in《GJB344A-2005 development specification of phlegmatizing electronic explosive initiators》.