王全亮,肖生苓,唐杰.基于APDL的托盘支腿结构承载能力的非线性屈曲分析[J].包装工程,2018,39(11):102-108.
WANG Quan-liang,XIAO Sheng-ling,TANG Jie.Nonlinear Buckling of Load-carrying Capacity for Pallet Outrigger Structure Based on APDL[J].Packaging Engineering,2018,39(11):102-108. |
| 基于APDL的托盘支腿结构承载能力的非线性屈曲分析 |
| Nonlinear Buckling of Load-carrying Capacity for Pallet Outrigger Structure Based on APDL |
| 投稿时间：2017-12-13 修订日期：2018-06-10 |
| DOI：10.19554/j.cnki.1001-3563.2018.11.018 |
| 中文关键词: APDL 重载纤维模塑 托盘支腿 极限载荷 非线性屈曲 |
| 英文关键词: APDL heavy duty fiber molding pallet outrigger ultimate load nonlinear buckling |
| 基金项目:中央高校基本科研业务费专项资金（2572016AB69）；国家重点研发计划（2017YFD0601004） |
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| 中文摘要: |
| 目的 探究新型重载纤维模塑托盘支腿结构的承载能力及非线性屈曲变化规律。方法 依据制备的纤维模塑材料参数为基础，通过编写Ansys APDL程序，对设计的重载纤维模塑托盘支腿结构进行压缩载荷下的非线性屈曲模拟。结果 Anays模拟与实验得到的极限载荷值误差均在5.2%以内，具有很好的模拟精度。重载纤维模塑托盘支腿在压屈变形过程中，最大应力-应变变化表现为4个阶段，即弹性阶段、强化阶段、屈曲变形阶段和应力失效阶段。不同尺径支腿的屈曲变形阶段应力均维持在12.69 MPa左右，低于材料极限强度。增大壁厚或拔模角度，能增强支腿后屈曲变形阶段的承载能力；增大壁厚或减小拔模角度，能增大支腿的极限载荷。拔模角度为1.5°～2.0°，倒圆角半径为9～15 mm时，有利于支腿模塑工艺的实现及优良承载性能的获得。结论 极限载荷与支腿壁厚和拔模角度具有很好的线性拟合优度，可通过壁厚或拔模角度预测支腿结构的极限承载。 |
| 英文摘要: |
| The work aims to study the load-carrying capacity and the nonlinear buckling variation law of outrigger structures of the new type of heavy duty fiber molding pallet. The nonlinear buckling of outrigger structures of the designed heavy duty fiber molding pallet under compressive loading was simulated by writing the Ansys APDL program, based on the parameters of the prepared fiber molding material. The deviation of ultimate load values obtained from the Anays simulation and experiments was less than 5.2%, which showed a good simulation accuracy. In the process of buckling of outrigger structure of the heavy duty fiber molding pallet, four stages (elastic stage, strengthening stage, buckling deformation stage and stress failure stage) were found for the maximum stress-strain change. The stresses at buckling deformation stage for outrigger structures of different diameters remained at about 12.69 MPa, which was lower than the ultimate strength of the material. Carrying capacity of outrigger structure after the buckling deformation stage was enhanced by increasing the wall thickness or draft angle. The ultimate load of outrigger structure was in-creased by increasing the wall thickness or reducing the draft angle. The molding process and excellent bearing performance of the outrigger structure could be achieved when the draft angle was 1.5° to 2.0° and the fillet radius was 9mm to 15 mm. The ultimate load and the wall thickness & draft angle of the outrigger have excellent linear goodness of fit. The ultimate bearing capacity of outrigger structure can be predicted based on the wall thickness or draft angle. |
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