Abaqus vs ANSYS: Which Simulation Software Is Better in 2025?
Introduction In modern engineering workflows, simulation tools are indispensable. They enable engineers to virtually test designs under various conditions, reducing the need for costly physical prototypes and accelerating innovation. Two of the leading finite element analysis (FEA) platforms are Abaqus and ANSYS, each with decades of development behind them. In 2025, these tools remain at […]
How FEM is changing biomechanics
Intro Finite-element modeling (FEM) gives engineers and clinicians a virtual lab for the body. Instead of cutting bone or running many costly experiments, we build digital bones, discs and implants, apply realistic loads, and watch how the parts behave. This helps teams design safer implants, plan surgeries, and teach students — all while saving time […]
Large Deformation in ABAQUS via UMAT
1. An Introduction to Non-Linear Continuum Mechanics Finite deformation (also called large deformation or finite strain theory) is a framework in continuum mechanics that describes the behavior of materials undergoing significant volume changes, where strains and rotations are not small. Contrary to small deformation theories, which assume infinitesimal changes, finite deformation accounts for geometric non-linearities […]
Tips for FEM Analysis of Solid Phase Transformation During Welding
Welding is one of the most critical processes in mechanical and structural engineering. Beyond simply joining metals, it introduces complex thermal cycles, stress fields, and microstructural transformations that can significantly affect the performance of the welded joint. For high-temperature steels like P91, understanding these transformations is essential for predicting residual stresses, hardness distribution, and service […]
History of FEA Computation Time
In the past decade, processor performance has increased significantly, leading to a huge jump in computational speed. For example, the first computers, such as the ENIAC, could perform 385 multiplications per second, whereas modern processors can perform more than 11 trillion operations per second (more than 28 million times faster). In addition, computation methodologies have […]
Creep Strain vs Stress Relaxation, A practical guide for CAE users
Description Learn what creep is, how temperature and stress control creep life, and which creep models CAE tools (ANSYS, COMSOL, Abaqus and others) use. Simple equations, practical CAE workflows, ASME / code context, and industrial project examples (boilers, pressure vessels, turbines, heat exchangers). What is creep? Creep is permanent deformation that accumulates over time when […]
Foreshortening During Stent Expansion: Why It Matters in Cardiovascular Simulations
Intro When placing a stent in a coronary artery, we expect it to hold its shape and position—but did you know that stent length can shorten by up to 10% during expansion? This change, known as foreshortening, is one of the key challenges in ensuring accurate and safe stent deployment. At EngineeringDownloads.com, we’ve been running […]
Hyper Elastic vs Linear Elastic Materials: Key Differences & Applications
Intro When designing materials for engineering applications, understanding their stress-strain behavior is critical. Two fundamental categories dominate this space: linear elastic and hyperelastic materials. Here’s what you need to know and why it matters. Linear Elastic Materials: Simplicity at Small Strains Linear elastic materials follow Hooke’s Law, where stress is directly proportional to strain. Think of a spring: pull it […]
Acoustic Metamaterials and Metasurfaces: Shaping the Future of Sound Control
Intro Acoustic metamaterials and acoustic meta surfaces are changing how we control sound waves. These specially designed structures go beyond the limits of traditional soundproofing. They offer new ways to control sound, such as reducing noise over a wide frequency range, blocking sound at very small scales, isolating vibrations, hiding objects from sound (acoustic cloaking), and […]
My FEM Software Journey: The Good, The Bad & The “Aha!” Moments
I’ve been quiet for a while, but for good reason—more on that later. Today, I’m sharing the messy, challenging, and surprisingly fulfilling path I took to learn commercial FEM software. If you’re navigating the same struggles in your FEM software journey—confusing GUIs, cryptic errors, trial-and-error modeling—you’re not alone. Phase 1: The “Click & Hope” Era […]
