Numerical implementation and validation of a viscoelastic-plastic material model for predicting curing induced residual stresses in adhesive bonded joints
نویسندگان
چکیده
One of the main challenges in joining multi-material components is assessment nature and magnitude residual stresses developing adhesive bond during heat curing manufacturing process. Numerical modeling these can provide insights for making informed decisions related to (i) material substrate properties; (ii) properties i.e., low, medium, or high stiffness; (iii) bondline geometry width bead thickness; (iv) cycle characteristics; (v) fixation design type, spacing, number joints. This work presents a cure history-dependent viscoelastic-plastic description bonded The highlight multi-physics package consisting kinetics model, cure-dependent viscoelastic temperature, strain-rate dependent plastic model formulation which be coded any finite element solver. approach predict due accumulated as well strains occurring For purpose validation, into user-defined subroutine (UMAT) LS-DYNA. verified at small specimen level by simulating uniaxial tension various temperatures strain rates. performance further evaluated component using specially designed experiments involving sub-sized automotive roof model. thermal displacements distortions structure captured 3D digital image correlation are compared predictions. Several guidelines selection mechanical fixations proposed result study.
منابع مشابه
development and implementation of an optimized control strategy for induction machine in an electric vehicle
in the area of automotive engineering there is a tendency to more electrification of power train. in this work control of an induction machine for the application of electric vehicle is investigated. through the changing operating point of the machine, adapting the rotor magnetization current seems to be useful to increase the machines efficiency. in the literature there are many approaches wh...
15 صفحه اولA Method of Predicting the Stresses in Adhesive Joints after Cyclic Moisture Conditioning
The durability of adhesive joints is of special concern in structural applications and moisture has been identified as one of the major factors affecting joint durability. This is especially important in applications where joints are exposed to varying environmental conditions throughout their life. This paper presents a methodology to predict the stresses in adhesive joints under cyclic moistu...
متن کاملAn elastic–plastic interface constitutive model: application to adhesive joints
An interface constitutive model which accounts for both reversible elastic, as well as irreversible inelastic separation-sliding deformations at the interface prior to failure has been developed and implemented in a finite-element computer program. A set of experiments has been conducted to determine the constitutive parameters in the interface model for adhesivelybonded components made from an...
متن کاملAdvances in Numerical Modelling of Adhesive Joints
The analysis of adhesively bonded joints started in 1938 with the closed-form model of Volkersen. The equilibrium equation of a single lap joint led to a simple governing differential equation with a simple algebraic equation. However, if there is yielding of the adhesive and/or the adherends and substantial peeling is present, a more complex model is necessary. The more complete is an analysis...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Adhesion and Adhesives
سال: 2022
ISSN: ['1879-0127', '0143-7496']
DOI: https://doi.org/10.1016/j.ijadhadh.2022.103195