In order to make clear the influence of two kinds of stress to the total stress , equivalellt thermal stress of lpg vessel under only tempertae load and its equlvalent mechanical stress under only inner wall stress are calculated and analyzed , then its equivalent total stress is calculated , analyzed and compared 為了弄清這兩種應力分別對總壓力的影響的大小，首先單獨對液化氣壓力容器僅受溫度載荷時的瞬態當量熱應力以及僅受內壁壓力時的瞬態當量機械應力進行了計算分析，然后計算了液化氣容器的當量總應力并對其進行了分析比較。
The anti - burnout character was improved obviously after the metallization be made more thick . the analysis on the gaas mmic metallization which burnout has been occured proved that the main reason was that the metallization is too thin to endure the mechanical stress , so the collapse will trigger the circuits burnout 對gaasmmic互連出現的燒毀現象的顯微分析表明，主要是空氣橋金屬化層過薄，尤其是搭接處易出現塌陷，金屬層加厚后，互連線的燒毀能力有明顯改善。
People has known that the mechanical stress influence botanic growth long before . the previous works shown that a series of complex physiological and chemical responses are brought in inside of organism by external forces . the complex physiological and chemical responses depend on the type and the strength of the applied forces 很早以前，人們就認識到機械力的作用對植物生長能產生明顯的影響，諸多學者對機械應力刺激的研究結果表明，機械力的刺激在生物內部會產生一系列的復雜生理和化學響應；并且這些響應的強弱與外界機械刺激力的大小和類型有密切的關系。
Steady state thermal analysis under natural convection boundary condition was performed . both the temperature distribution and the induced mechanical stress were calculated in this simulation . high stress area was found and the potential reasons which can cause packaging to fail were also discussed 具體內容包括: 1 .建立一款疊層csp / bga封裝的三維實體有限元模型,求解自然對流條件下的穩態溫度場分布,并在此基礎上進行穩態熱應力和熱應變分析,找出由于溫度梯度在封裝內部引起的高熱應力區域,分析其可能造成的失效結果。
