论文部分内容阅读
以研究某轮式装载机ROPS的承载与变形情况为例,利用自制加载台架对ROPS进行侧向、垂向和纵向依次加载。试验结果表明,试验的ROPS在自制试验台架标准加载条件下,任何变形部分或模拟地平面LSGP均未入侵DLV;侧向加载力达到标准值的1.2倍时出现塑性铰,侧向能量吸收值达到标准值时,加载力为标准值的1.34倍,完全卸载后留有110 mm的残余变形量,约为19 085 J塑性变形功;垂向加载过程没有出现明显的屈服和塑性变形,强度最大;纵向加载至标准力值后完全卸载会留有小量的残余变形,几乎处于弹性变形阶段。试验结果表明:自制试验台架试验结果真实可靠,各向变形规律可为ROPS轻量化改制或结构优化设计提供科学的依据。
Taking a case of loading and deformation of ROPS for a wheel loader as an example, ROPS is loaded sideways, vertically and longitudinally using self-made loading gantry. The experimental results show that under the standard loading conditions of self-made test rigs, ROPS of any tested ROPS did not invade DLV in any deformed part or simulated ground plane LSGP. When the lateral load force reached 1.2 times of the standard value, the plastic hinge appeared and the lateral energy absorption value When the standard value is reached, the loading force is 1.34 times of the standard value, leaving 110 mm of residual deformation after complete unloading, which is about 19 085 J plastic deformation work. There is no obvious yielding and plastic deformation in the vertical loading process, ; After the vertical loading to the standard value of the complete unloading will leave a small amount of residual deformation, almost in the stage of elastic deformation. The test results show that the test results of the self-made test bench are reliable and reliable, and the regularity of the deformation can provide a scientific basis for the light weight reforming or structural optimization design of the ROPS.