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对云南省五个专业运输公司的实际调查,CA-10B型载重汽车按原厂规定装载4吨,新车车架到第一次断裂,有80%左右断裂在有木纵梁的部位。为了达到增载至5吨的技术——经济效果,我们增大了车架木纵梁的截面尺寸。以弥补车架中段和后段应力增大的不足。经按比例缩小的模型试验,车架木纵梁由6.25(宽)×15(高)厘米,增大至7×20厘米后,车架中部的应变量,平均减少14%左右。为了求出车架危险断面的真实应力,我们又做了汽车
The actual investigation of five professional transport companies in Yunnan Province, CA-10B-type truck loaded according to the original provisions of 4 tons, the new car frame to the first fracture, about 80% fracture in a wooden longitudinal beam parts. In order to achieve the technical-economic effect of uploading to 5 tons, we increased the cross-sectional dimensions of the frame wooden longitudinal beams. To make up for the middle and rear of the frame to increase the lack of stress. According to the scaled-down model test, the amount of strain in the center of the frame decreases by an average of about 14% after increasing the width of the frame from 6.25 (W) × 15 (H) cm to 7 × 20 cm. In order to find out the true stress of the frame dangerous cross section, we made a car again