英语翻译(3) Sudden turning Fig.18 shows the comparison between c

英语翻译
(3) Sudden turning
Fig.18 shows the comparison between calculation and
measurement for rear left evaluation point.Stress level shows
a fairly good coincidence with measurement for both cases of
turning to the left and turning to the right.The measured
wave having the same period as vehicles’ operation cycle and
the small waves having shorter period and riding on that wave
seem to have been resulted from the gradient and unevenness
of road surface (calculation assumed a flat surface of road).
Fig.18 Stress at rear left point when loaded machine
suddenly turns
Fig.19 shows the deformation and stress distribution of
frame when the vehicle turns to the left.Right frame deforms
in “horizontal bending” + torsion) mode and comparatively high
stress occurs on rear part.
5.Conclusion
The kinematical analysis method for vehicle that considers
the elastic characteristic of frame was applied to the rear frame
of articulated dump truck,and the result was evaluated by
comparing with actual measurement.As a result,it was
confirmed that this method can be used to predict the dynamic
stress of frames when a vehicle travels.
We will continue to make efforts also in the future to
evaluate our method further by comparing with actual stress
measured with actual machines,to promote its improvement,
and to apply it to the subjects of dynamic load and stress when
construction machinery travels and operates.
References
1) “Development of Dynamic Stress Analysis Method for
Dump Truck”,KOMATSU TECHNICAL REPORT,1997,
Vol 43,No.2
2) ADAMS/Flex Theory Manual
3) ADAMS/Durability Theory Manual
请手工翻译 机译请绕路

突然翻转
图18显示的是队左后评估点的计算和实际测量结果的对比.往左翻转和往右翻转的测量压力水平显示相当一致.所有车辆运行周期所测得的结果有相同的波形,在小波段上有较短的周期,就在这一波段上可以看到由于路面的坡度和不平所导致的结果（计算时的假设是路面平坦）
图18 负载车辆突然翻转时左后点的压力显示
图19 显示车辆左转时车体的变形和压力分布.在水平方向上的弯曲和扭转模式下导致的右车体变形和相对应车体后部的高压力
5.结论
后铰接自卸卡车在应用动态分析法时应该考虑车体的弹性特性,理论计算结果和实际测量相比较来评估这一方法.作为结果,可以肯定这一方法能够被用来预测车体在运行时的动态压力分布.
我们会继续努力来评估这一方法通过比较实际测量,优化它,应用到工程车辆运行和开动时的动态负载和压力分析.
参考
1）自卸卡车的动态压力分析方法的发展,小松公司技术报告,1997,43卷
2）ADAMS/弹性理论手册
3）ADAMS/持久性理论手册