Modelling the behavior of adhesive joints for lightweight structures

模拟轻质结构粘合接头的行为

• 批准号: 523214-2018
• 负责人: Gakwaya, Augustin
• 金额: $ 1.8万
• 依托单位: Université Laval
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=651425
• 关键词: Modelling; behavior; adhesive; joints; lightweight

Adhesives are playing an increasing role in car assembly. They can contribute to weight reduction by replacing**mechanical fasteners, and can be used to join dissimilar materials (like steel, aluminium, magnesium,**composites, etc). However, innovative assemblies design require the use of accurate numerical models, in order**to reduce the risk of potential failure as well as unnecessary over-designs. The aim of this project is to develop**a predictive model for adhesively bonded surfaces that are commonly or potentially encountered in**automobiles. A commercial code (LS-Dyna) will be used to model the assembly, and available material models**for adhesives will be evaluated for their ability to reproduce the behavior of adhesives used by the supporting**organization. The chosen material models will be calibrated following various experimental tests at different**strain rates and/or temperatures. The models will then be validated at the coupon and component levels.

粘合剂在汽车装配中发挥着越来越重要的作用。它们可以通过取代机械紧固件来减轻重量，并可用于连接不同的材料（如钢，铝，镁，复合材料等）。然而，创新的组件设计需要使用精确的数值模型，以 ** 降低潜在故障的风险以及不必要的过度设计。该项目的目的是开发一个预测模型，用于汽车中常见或潜在的粘接表面。将使用商业代码（LS-Dyna）对组装件进行建模，并评价粘合剂的可用材料模型 ** 再现支持 ** 组织所用粘合剂行为的能力。所选材料模型将在不同应变率和/或温度下进行各种实验测试后进行校准。然后将在试样和组件级别验证模型。