5- Stress Prediction Models in Composite Curing (Abaqus Simulation) скачать в хорошем качестве

5- Stress Prediction Models in Composite Curing (Abaqus Simulation)

In this crucial video, we’re moving beyond the basics to tackle one of the most complex but essential topics in composite manufacturing: predicting and calculating residual stress during the curing process. If you’re serious about accurate simulation, this is a must-watch! What We Cover in This Video: ✅Hooke’s Law Refresher: We start by looking at how stress (σ) is a function of strain and the stiffness matrix (C). You'll see why this equation isn't straightforward for curing composites—the stiffness matrix changes over time based on temperature and degree of cure! ✅The 3 Categories of Stress Prediction Models: We break down the generally recognized model categories used to predict residual stress: ✔Linear Elastic Models ✔Viscoelastic Models ✔Path-Dependent Models ✅Deep Dive into Linear Elastic Models: We focus on the simplest, yet foundational models, using the well-known Hercules AS4/3501-6 graphite epoxy composite as our example. ✔The Chi-alpha (X-α) Model: The most basic formulation, describing matrix modulus (E_M) as a function of the degree of cure (α). ✔The Chi-T (X-T) Model: The enhanced, more precise modification that introduces key temperatures. ✅Understanding Glass Transition Temperature (T_g): Learn what T_g is, why it's a critical characteristic for polymers and composites, and how it depends on the degree of cure for our AS4/3501-6 composite. ✅Vitrification Explained: Ever heard the term "vitrification"? We clarify what this process means, how it relates to the glass transition and cure temperatures, and how to avoid it. 💡 Key Takeaway: Since stress depends on temperature and degree of cure, you must pair these stress models with a thermochemical model for accurate process simulation! (We’ll be applying the thermochemical equations from Lesson 1, so go watch that if you haven't!) You can get the full tutorial through the link below: https://caeassistant.com/product/curi... Also, you can get FREE info in our complete blog about Curing and Curing simulation: https://caeassistant.com/blog/composi...