Geometry & boundaries
What is being assessed?
Drawings, CAD, dimensions, supports, interfaces, known constraints and relevant simplifications.
Services
Advanced Nonlinear FEA
High-fidelity finite element modelling for components, assemblies, supports, connections and structures where simplified checks cannot represent the governing nonlinear response.
Buyer problem
Components · assemblies · local failure · nonlinear response
Global design checks can miss the behaviour that actually controls a decision: contact separation, plasticity, local instability, large deformation, thermal stress, connection flexibility, or complex load transfer through an assembly.
Method
Implicit or explicit finite-element workflows selected according to the response regime, including shell, solid or mixed discretization, nonlinear materials, contact, preload states and targeted output requests.
Deliverable
Model files where scoped, setup notes, stress/strain/displacement results, history outputs, critical-zone interpretation, sensitivity checks and a technical report documenting assumptions and limitations.
Value
The objective is a reviewable engineering result that identifies controlling behaviour — not simply a contour image.
Typical inputs
What we need to scope this service.
Materials & loading
What controls the physics?
Material grade/data, preload or operating state, load history, pressure, temperature, impact/blast scenario or other relevant actions.
Decision objective
What must the analysis answer?
Local demand, failure mechanism, comparison, screening, residual response, retrofit effect, integrity concern or report requirement.
Technical depth
How Axis scopes the analysis.
01
When this service is needed
Use this service when a component or assembly is governed by local behaviour that routine global checks cannot resolve: contact, local plasticity, support flexibility, local buckling, nonlinear load transfer, thermal stress, instability or damage.
02
Modelling depth
Models may use implicit or explicit solution strategies depending on the physics and stability of the problem. Current public work includes Abaqus/Standard and Abaqus/Explicit implementations, but the service itself is solver-independent.
03
Verification controls
Units, boundary conditions, reaction paths, contact behaviour, mesh density, convergence/stability, energy response and history outputs are checked before conclusions are drawn.
04
Client value
Clients gain a clear explanation of the controlling regions, credible comparison of alternatives, and a documented numerical basis that another engineer can review.
Typical inputs
- Geometry, CAD, drawings or sketches with key dimensions
- Material grade, nonlinear data or agreed assumptions
- Load cases, supports, contacts and operating/preload conditions
- Required outputs: stress, strain, displacement, reaction, damage or temperature
- Desired deliverable level: audit, focused study or full technical report
Scoping principle: the modelling level is selected after reviewing the engineering question, available data, uncertainty, and required decision. Axis does not recommend high-complexity simulation when a simpler verified check is more appropriate.
Related evidence
Relevant engineering studies.
Research development case
Cryogenic thermal loading in a steel LNG tank
Transient thermal–structural assessment of cooling history, thermal gradients, restraint and stress localization.
Read case study →
Peer-reviewed research case
VCE-driven LNG vessel–pipe–flange vulnerability
Explosion-driven local deformation and vulnerability in a connected vessel, piping, flange and support system.
Read case study →Discuss a advanced nonlinear fea problem.
Send the available information and the engineering question. Axis will propose a suitable analysis route and required inputs.