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| 铝合金胶接接头力学性能试验及仿真分析 |
| Mechanical Property Test and Simulation Analysis of Aluminum Alloy Adhesive Joint |
| Received:November 01, 2023 |
| DOI：10.3969/j.issn.1674-6457.2025.02.007 |
| 中文关键词: 铝合金胶接接头 力学性能 数值模拟 结构胶 RADIOSS |
| 英文关键词: aluminum alloy adhesive joint mechanical properties numerical simulation structural adhesive RADIOSS |
| 基金项目: |
| Author Name | Affiliation | | YANG Qing | Lingyun Industrial Co., Ltd., Shanghai 201708, China | | LI Xin | Lingyun Industrial Co., Ltd., Shanghai 201708, China | | WANG Jiaxue | Lingyun Industrial Co., Ltd., Shanghai 201708, China | | WANG Huafeng | Lingyun Industrial Co., Ltd., Shanghai 201708, China | | KONG Dejia | Lingyun Industrial Co., Ltd., Shanghai 201708, China |
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| 中文摘要: |
| 目的 通过试验与仿真分析，研究铝合金胶接接头在复杂应力状态下的力学性能及失效行为，为胶接接头的设计与应用提供重要参考。方法 选取6061铝合金材料作为连接基体，设计了5种不同角度的胶接接头。对胶接接头进行力学性能试验，包括拉伸强度和剪切强度试验。基于RADIOSS软件建立胶接接头的有限元模型，模拟加载过程，并分析接头的应力分布、变形情况等。结果 通过试验可知，铝合金胶接接头的拉伸峰值载荷为19 334 N，剪切峰值载荷为19 473 N，30°拉剪组合峰值载荷为34 364 N，60°拉剪组合峰值载荷为21 141 N，剥离峰值载荷为4 498 N。建立了不同角度胶接接头的仿真模型，并通过试验结果，拟合出FAIL/SNCONNECT模型中的失效参数，建立了失效模型，仿真精度达到90%以上。最后，基于电池包的应用工况，进行了胶黏零件球挤压试验和仿真，验证了仿真模型及其失效参数的准确性。结论 铝合金胶接接头的力学性能较好，具有较高的拉伸强度和剪切强度。胶接面在不同受力状态下的力学性能有较大差异，其中，30°拉剪接头的强度最高，剥离强度最低。通过建立合适的失效模型进行仿真分析，可以有效预测胶接接头的力学性能及其失效模式，仿真精度高于90%，为接头的设计与应用提供了指导。 |
| 英文摘要: |
| The work aims to study the mechanical properties and failure behavior of aluminum alloy adhesive joints under complex stress states through experimental and simulation analysis, so as to provide important reference for the design and application of adhesive joints. 6061 aluminum alloy was selected as the bonding matrix and five adhesive joints of different angles were designed. The mechanical properties of the adhesive joint were tested, including tensile strength and shear strength. Based on RADIOSS software, the finite element model of the adhesive joint was established, and the stress distribution and deformation of the joint were analyzed by simulating the loading process. Through experiments, it was obtained that the tensile peak load of the aluminum alloy adhesive joint was 19 473 N, the tensile-shear combined peak load at 30° was 34 364 N, the tensile-shear combined peak load at 60° was 21 141 N, and the peeling peak load was 4 498 N. Simulation models of adhesive joints at different angles were established. And based on the experimental results, the failure parameters in the FAIL/SNCONNECT model were fitted out. The failure model was established, and the simulation accuracy reached above 90%. Finally, based on the application conditions of the battery pack, ball extrusion tests and simulations were carried out for adhesive parts, and the accuracy of the simulation model and its failure parameters were verified. The aluminum alloy adhesive joints have good mechanical properties, high tensile strength and shear strength. There are great differences in mechanical properties of the adhesive surface in different loading states, among which, the 30° tensile-shear joint has the highest strength and the lowest peeling strength. By establishing a suitable failure model, simulation analysis can effectively predict the mechanical properties and failure modes of adhesive joints, and the simulation accuracy is higher than 90%, providing guidance for the design and application of joints. |
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