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27.直接受到重复荷载作用的焊接结构,影响其疲劳强度的最主要因素是() A 应力变化的循环次数、最大应力
27.直接受到重复荷载作用的焊接结构,影响其疲劳强度的最主要因素是() A 应力变化的循环次数、最大应力
2025-04-07 08:32:36
推荐回答(1个)
回答1:
那得看应力的大小啊 如果应力没有超过材料的强度极限的,就要看应力变化的循环次数;如果最大应力超过材料的强度极限的话,那就得以最大应力为影响疲劳的主要因素了
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