07-01-2026 | Posted by Principia
Mechanical simulation is a key tool for predicting the behaviour of components and structures before manufacturing prototypes. Its use enables the assessment of strength, stiffness or failure under real conditions, reducing costs and improving reliability. Advanced solutions such as ABAQUS provide the accuracy required to tackle complex engineering problems.
In industrial environments, mechanical simulation complements design, speeds up product development and supports decision-making based on predictive models. Sectors such as automotive, aerospace, energy and infrastructure rely on analyses that integrate advanced materials, contact, non-linear loads and multiphysics scenarios.
The growing complexity of products demands tools capable of faithfully representing structural behaviour and validating design hypotheses. Integration with collaborative platforms and unified simulation environments reinforces this approach, connecting modelling, computation and data management in a continuous process.
Mechanical simulation consists of predicting, through numerical models, how materials and structures respond to loads, deformations, vibrations, temperature or impacts. Its aim is to reproduce the real behaviour of a system with sufficient accuracy to support design decisions without relying solely on physical testing.
In modern engineering, this capability is fundamental for validating designs at early stages and ensuring compliance with safety requirements and standards. Mechanical simulation allows the evaluation of scenarios that would be difficult or expensive to reproduce in a laboratory, reducing the number of physical prototypes and shortening development cycles.
The discipline enables predictive engineering, where structural behaviour is anticipated before manufacturing. This is especially valuable in sectors demanding maximum reliability: automotive, aerospace, energy, transport and infrastructure. Simulation not only improves product quality, but also allows the optimisation of geometries, materials and processes at significantly lower cost.
Mechanical simulation is based on the principles of continuum mechanics, which describe the behaviour of materials and structures through fields of displacement, stress and strain. These fields are mathematically linked through the constitutive and equilibrium equations, which allow modelling how a solid responds to different loads.
Material models are a central element. Linear elastic materials provide a valid approximation under small-deformation regimes, while plastic models represent the onset of yielding and permanent deformation. For advanced applications, viscoelastic time-dependent formulations and hyperelastic models—suitable for rubber, biological tissues or polymers undergoing large deformations—are used.
Mechanical simulation must also account for geometric non-linearities, present when deformations are large or stiffness changes with configuration, and contact non-linearities, essential for modelling interactions between parts, friction or separation. These effects require robust solvers capable of managing changing states without compromising numerical stability.
In many structural problems, fatigue or fracture phenomena are critical. Simulation enables the assessment of load cycles, crack initiation and propagation using approaches such as fracture mechanics or energy-based techniques.
The most widely used numerical method to solve these models is the Finite Element Method (FEM), which discretises the geometry into elements and nodes to obtain approximate solutions of the mechanical field. Its flexibility in representing complex geometries and advanced materials makes it the basis of most structural simulation software.
The process begins with the definition of the problem: objectives, behavioural assumptions, loading conditions and evaluation criteria. A clear approach at this stage is essential to ensure that the model accurately represents operational reality and that the results support technically sound design decisions.
The next stage involves preparing and cleaning the geometry, removing irrelevant details, simplifying non-structural elements and ensuring that the topology is suitable for meshing. This preparatory work reduces computational cost and improves solution stability.
Meshing is one of the most critical steps. Suitable element types are selected, local refinements are applied in areas with high stress concentration, and a certain quality is ensured in terms of distortion and continuity. Meshing decisions directly influence the accuracy of the analysis and must suit the phenomenon under investigation.
Once the part is discretised, physical and numerical models are selected: material behaviour, contacts, type of analysis (static, dynamic, implicit or explicit) and non-linear considerations. At this stage, the robustness of the simulation software is crucial, especially when working with complex contacts, plasticity, large deformations or time-dependent models.
The convergence, stability and sensitivity stage ensures that the solution is numerically reliable. This includes reviewing residuals, force balances, admissible increments and studying the influence of mesh refinement or key assumptions on the final result. The goal is to ensure that results do not depend on numerical artefacts.
Finally, experimental validation and correlation with physical tests confirm that the model adequately reproduces real behaviour. Comparing deformations, load–displacement curves, failure modes or characteristic stresses allows the model to be tuned and used confidently in later project phases.
Mechanical simulation software must be able to solve structural problems with precision, numerical stability and sufficient detail to meet industrial demands. Solver robustness is essential, especially when working with material non-linearities, large deformations or complex contacts. These conditions are common in engineering and require algorithms capable of maintaining convergence even under extreme scenarios.
The tool must offer advanced material modelling, including plasticity, viscoelasticity, hyperelasticity and temperature-dependent behaviour. In sectors such as automotive, aerospace and energy, this capability is key to accurately representing failure mechanisms, fatigue or fracture in components subjected to variable loads.
Another fundamental requirement is the management of geometric and contact non-linearities, present in assemblies, mechanisms, flexible components or structures undergoing large displacements. The software must handle these situations stably, without relying on simplifications that compromise the validity of the analysis.
The implementation of advanced elements—beam, shell, solid, membrane or cohesive—widens modelling possibilities and enables the analysis of complex geometries without losing computational efficiency. Added to this is the need for implicit and explicit solvers, capable of resolving both quasi-static problems and high-velocity transient events such as impacts.
Integration with CAD, multiphysics capabilities and access to HPC resources complete the features that distinguish software truly oriented towards engineering. Not all tools on the market can manage this level of complexity, particularly in environments with strict precision or safety requirements. This is where solutions such as ABAQUS have become industrial benchmarks for solving highly non-linear and structurally complex problems.
ABAQUS is regarded as an industrial standard in mechanical simulation due to its ability to solve highly non-linear models with stability and accuracy. Its implicit and explicit solvers allow the study of both complex quasi-static analyses and high-speed dynamic events such as impacts or severe deformation, with a level of detail difficult to achieve with simpler tools.
One of its main strengths is the breadth of available material models, covering plasticity, damage, hyperelasticity, viscoplasticity, temperature-dependent behaviour and specialised composite models. This enables faithful representation of structures subjected to extreme loads, thermal cycles or variable service conditions.
ABAQUS also stands out for its management of geometric and contact non-linearities, thanks to advanced algorithms that maintain convergence even in complex assemblies or configurations involving friction, separation and large displacements. This capability is crucial in sectors where real behaviour depends on interactions between parts or flexible mechanisms.
Compared with more basic FEM solutions, ABAQUS offers superior performance when a detailed, multiphysics or rigorously validated simulation is required. Its use spans automotive, aerospace, energy, rail and civil engineering, where solver robustness and specialised tools deliver reliability and efficiency in critical projects.
Integrating ABAQUS within the 3DEXPERIENCE platform enables work in a unified environment where design, simulation and data management share the same digital model. This continuity avoids duplication, reduces transfer errors and ensures that changes to geometry or load conditions are directly reflected in the analysis.
The ecosystem offers full traceability, version control and model reuse, simplifying the management of variants and parametric studies. It also enables collaboration between design, analysis and validation teams without the need to exchange files, maintaining a single source of truth at all times.
The platform also incorporates automation and HPC capabilities, enabling broader simulation campaigns, the evaluation of alternative configurations and reduced computation times through distributed resources. For complex projects, this integration delivers consistency, efficiency and a more robust workflow throughout the mechanical engineering process.
Mechanical simulation is essential in sectors where structural integrity and safety determine design success. It allows behaviours to be anticipated, critical scenarios assessed and solutions validated without relying on multiple physical prototypes. At Principia, this discipline is applied to real problems requiring numerical precision, advanced models and rigorous interpretation of results.
In studies of impacts on aircraft, Principia used advanced simulations to analyse how external elements such as birds, debris or ice interact with aircraft structures.
The aim was to assess the resistance of wings or fuselage and determine damage modes under high-energy impacts. Simulations reproduced the dynamic response of materials, identified critical zones and provided key insights for strengthening structural safety.
In the analysis of vehicle restraint barriers, mechanical simulation enabled the study of the interaction between the vehicle and the barrier during a collision.
The model reproduced system deformation, energy absorption mechanisms and dynamic impact behaviour. This numerical approach supported geometry optimisation, assessment of different containment levels and recommendations based on regulatory criteria.
In the project on syringe operation, Principia analysed the mechanical behaviour of internal components and their interaction during actuation.
Simulation enabled the study of contact between parts, friction, local deformations and potential failure modes, ensuring safe and consistent device performance. Results supported geometry optimisation and improved ergonomics.
For those working with advanced materials or needing to integrate structural simulation into lightweight component development, the webinar Diseño y simulación mecánica de composites para la industria del automóvil is available, presenting methodologies and best practices applied to real projects.
Mechanical simulation is essential in modern engineering for anticipating structural behaviour, reducing physical prototypes and ensuring design reliability. Combining advanced models, complex materials and robust numerical methods enables the solution of problems requiring precision and rigorous interpretation.
Specialised tools such as ABAQUS, integrated within collaborative platforms like 3DEXPERIENCE, provide numerical stability, multiphysics capabilities and traceability in processes where non-linearities, contacts and dynamic loads are critical. Principia’s industrial experience demonstrates the practical value of these technologies in real contexts.
If you would like to review a technical approach, evaluate a complex case or integrate mechanical simulation into your engineering process, contact Principia to discuss your needs and define the most appropriate approach.
