Firstly , this paper describes the optimization problem of thermal stress of fabrication process and steady work process for the hollow cylinder and the infinite plate . then , thermal stress distribution is calculated making use of theoretical formulation and the results can be validated by finite element method . in optimization , the restriction condition is heat insulation performance and the objective function is danger coefficient
2.
Shallow structure earthquakes are always concurrent with fault activities . evidence testifies that earthquakes often occurred densely near the place where the faults exist . there is an intimate relationship between earthquakes and active faults . so in analyzing the danger coefficient of earthquakes , it is very important to ascertain the locations and scale of earthquakes that will occur possibly in the future
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