ABSTRACT:Objective To evaluate whether the rotary arm system of TLJ-60A geotechnical centrifuge can meet the strength requirement and give some suggestions. Methods The 3-dimensional finite element numerical model was built and the boundary and load conditions were determined. Then the maximum equivalent stresses in key locations of the rotary arm system were calculated and a suggestion on the material selection was given. After the centrifuge assembling, the strains of the corresponding locations were tested in a working condition. Results It showed that the numerical results agreed well with the test results. The mean difference was 4.5%, the maximum difference was 12.46%;and the numerical results were conservative. Conclusion The evaluation and the suggestions were correct, which supported the one-time success of the equipment.%目的:评估TLJ-60A型土工离心机转臂系统能否满足强度要求,并提出改进建议。方法对转臂系统建立三维有限元数值模型,确定载荷条件和边界条件,计算关键部位的最大等效应力,给出材料使用建议。在建成后离心机运行中进行应变响应实测,并就计算结果与实测数据进行比较分析。结果数值模拟结果与实测结果吻合较好,平均差异为4.5%,最大差异为12.46%,数值模拟偏保守。结论评估结果及改进建议是正确的,支撑了设备研制的一次成功。
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机译:带有可动短臂的挖掘机等-在后面的旋转范围AB处的面向抓爪的侧面具有松动元件AB DE4218502A在短臂(2)的自由端装有一个工作元件(4),相对于该抓手的对面装有抓爪(6)。工作元件可在悬臂上旋转并且可停在每个相应的位置。抓爪独立于工作元件枢转地安装在其旋转平面上。抓爪被往复驱动w.r.t.工作元素。悬臂在与抓爪相反的一侧具有一个松动元件(8),该元件伸入抓爪的旋转范围内。首选松开元件具有渐缩的切削刃。使用/优点-对于重土工作,应使用在起吊过程中松开挖出的物料的设施。 AN 93396177 TI隔热材料的制造方法-使用额外的工艺均匀混合结合剂和隔热材料,然后用CO2气体冲洗