257| 14
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大佬們,無(wú)縫管足夠厚和圓鋼的抗彎強(qiáng)度哪個(gè)大? |
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點(diǎn)評(píng)
說(shuō)的太對(duì)了,這都是材料力學(xué)的基本常識(shí),有提問(wèn)的功夫,不如去翻翻材料力學(xué)教材
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點(diǎn)評(píng)
意思是圓鋼中心先出現(xiàn)疲勞裂紋,然后擴(kuò)展到表面,導(dǎo)致軸斷裂嗎?
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