Explicit simulations for fast, violent, or highly nonlinear events
Explicit simulations for fast, violent, or highly nonlinear events, using LS-DYNA and Autodyn. We model impacts, crashes, collapses, explosions, and penetrations, including ballistic and blast scenarios. Applications cover automotive (virtual crash testing), rail, aerospace, and defense industries. We support advanced material modeling, complex contact definitions, and numerical stability control in short-duration, high-deformation simulations.
Train locomotive impact – 36 Km/h
Simulate frontal impact of a train locomotive at 36 km/h, based on SR EN 15227+A1:2011 – Passive Safety for Railway Vehicles.
Predict stress, deformation, and energy absorption during crash scenarios.
Evaluate crashworthiness to meet safety standards while reducing physical prototypes.
Detailed FE model of the front structure with reinforcements and crash zones.
Solver: Ansys LS-Dyna for impact simulation at 36 km/h.
Validated materials and failure criteria for realistic deformation and energy dissipation.
Boundary conditions defined per standard impact setups.
Analysis of contact, crushing behavior, and deceleration.
Identified critical deformation zones and validated structure per SR EN 15227+A1:2011.
Reduced need for full-scale crash tests, saving time and cost.
Improved design through virtual testing and optimization.
Supports passenger safety and regulatory compliance.
Rollover analysis of a bus (RAR homologation)
Accurate dynamic simulations of the full bus model according to UN/ECE Regulation 66.
Predict displacement and stress distributions during crash scenarios.
Optimize the design to reduce physical testing and development costs.
Solver: Ansys Ls-Dyna
First step of the project - dynamic simulation of a simplified frame to validate the working methodology.
Parameters taken into account: Material laws, Strain failure criteria, Curve values – stress-strain specific for 1.4003 steel;
Cowper-Symond parameters values, taking into account the strain rate effect;
Type and minimum size of the element; Structure ground friction coefficients.
Identified critical areas of stress and deformation.
Validated simulation approach through physical crash frame tests (simplified model).
Achieved a reduction of 120k euros in physical testing costs by performing the test on full model only in virtual environment.
Increased safety assurance and shortened product development time.
Achieved the RAR homologation faster.
Reinforcement of gap hider for impact
Design and optimize the gap hider (size, shape, strength and constraints) to meet crash requirements.
Reduce workflow and improve predictability.
Reduce or eliminate prototype testing.
Solver: LS-DYNA
Material definition: Advanced material models (LS-DYNA)
Physics coverage: capable of capturing key physics characteristic and phenomena during the impact, such as large deformations, material failure, necessity of adding more constraints (LS-DYNA)
The impact simulation verifies how well the central bracket reinforcement improves the gap hider’s ability to absorb and distribute impact energy, reducing the risk of cracking or permanent deformation
The study ensures the design meets safety standards preventing hazardous failure modes during collisions
Helps determine whether the material and its thickness, flexibility, or mounting strategy are adequate for absorbing shock loads.
Enables rapid digital iteration of the design and material layout before committing to costly physical prototypes, saving time and reducing development costs.
Blast of a barrel (Explicit Dynamics)
Evaluate structural response to a blast event.
Analyze displacements, stresses and strains.
Enhance design resilience for extreme loading conditions.
Reduce dependency on physical blast test.
Solver: ANSYS Explicit Dynamics
Load Definition: Detonation modeled via virtual explosive source.
Physics coverage: Capable of capturing key physics characteristic and phenomena.
Cost savings from eliminating destructive field testing.
Accurate prediction of blast survivability and deformation modes.
Enables design optimization for safety and regulatory compliance.
Fast iterative evaluation of design alternatives under extreme events.
Barrel of a gun shooting (Explicit Dynamics)
Simulate internal ballistic effects during projectile firing.
Assess structural integrity of the barrel under rapid pressure increase.
Evaluate deformation, stress propagation, and recoil behavior.
Optimize barrel design for performance, safety, and durability.
Solver: ANSYS Explicit Dynamics
Simulation Type: High-speed dynamic simulation of firing event
Setup: Projectile modeled with virtual explosive source
Physics: Captures contact, friction, and transient deformation effects
Predicts barrel response to firing load in milliseconds.
Avoids costly experimental tests and live-fire trials.
Supports material selection and design optimization.
Ensures regulatory compliance and safety assurance.
Ball trajectory simulation (Explicit Dynamics)
Simulate and visualize the trajectory of a ball under dynamic motion.
Evaluate contact interactions, bounce behavior, and flight path.
Assess the influence of gravity, velocity, material, and impact surfaces.
Solver: ANSYS Explicit Dynamics.
Simulation Setup: Ball given an initial velocity vector, full 3D motion captured including bounce.
Physics coverage: Physics Captured.
Provides insight into motion dynamics and collision effects.
Allows safe and efficient virtual testing of different conditions.
Enables optimization of trajectory control systems.
