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一前言工程上,高温零件的设计至今仍以经典的强度理论为基础,它是以σ≤[σ]为依据。σ为设计应力: 许用应力[σ]=持久强度(或蠕变极限)/安全系数。高温结构零件的许用应力是根据材料的持久强度
A preface Engineering, the design of high temperature parts is still based on the classical theory of strength, it is based on σ ≤ [σ]. σ is design stress: allowable stress [σ] = endurance (or creep limit) / safety factor. The allowable stress of high-temperature structural parts is based on the long-lasting strength of the material