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2—1 当许用剪应力为8公斤/毫米~2时,要使下图之角焊缝能承受12吨的最大负载时,试求出最小焊缝长度(可考虑弯曲和应力集中)。
2-1 When the allowable shear stress is 8 kg / mm ~ 2, try to find the minimum weld length (bending and stress concentration can be considered) when the fillet welds in the following figure can bear the maximum load of 12 tons.