## What is Finite Element Analysis (FEA)?

Nowadays, it is a numerical method which can be used effectively to solve complex engineering problems. This method, which was developed for the first time stress analysis of airplanes in 1956, was successfully used in the solution of applied sciences and engineering problems in the following decade. Depending on the finite element method, it consists of sub-regions called simple and multiple finite elements with a solution zone. Mathematically, systems are known as numerical analysis with specific material properties and applicable boundary conditions. Stress-Strain, ie structural analysis or stress analysis, helps to determine the safety coefficients of the existing system and to optimize the material, cost, production time and strength values ​​in the manufacturing processes. Structural analysis, heat transfer analysis, strength analysis are evaluated in this context.

## Our capabilities

By means of structural analysis, it is understood how much the product design can meet the requirements, and the results obtained near the real situation are obtained by using linear or nonlinear solution methods which are modeling with physical parameters. With its midas NFX software, BREN Advanced Technology Energy Inc. provides you with the finite element analysis solutions, knowledge and experience of all kinds of mechanical problems. • Linear contacts: single-body motion, Slip, Interpolation connection
• Prestress function
• Different and practical loads and boundary conditions
• Boundary conditions: restriction condition, symmetric condition, MPC condition, etc. GUI-based sub-field definition, calculation of results and transformation of result coordinate system Outstanding analysis speed with high performance parallel solvents
• Direct method: multifrontal solvent
• Iterative method: AMG solvent Controlling practical analysis results (convergence error caused by network density, etc.).

#### Modal / Torsion Analysis

• Natural frequency, mode shape, mode participation factor, effective mass results and calculation error control
• Define the eigenvalue range to be calculated: Sturm Sequence control
• Linear contact function: single body movement, floating, interpolation connection
• Pre-stress model: Mod Assurance Criteria (MAC)

#### Nonlinear Analysis

• Nonlinear material – Material models: elastoplastic, hyperelastic –
• Hardening behavior: isotropic, kinematic, combined
• Hyperelastic material models: Mooney-Rivlin, Neo-Hookean, Polymoial, Ogden, Blatz-Ko etc.
• Nonlinear Geometry – Large displacements and Large rotation are considered using the updated
• Lagrangian method
• Follower force: pressure, gravitational force, concentrated load, etc.
• Nonlinear Contact – Three-dimensional surface-surface contact, single surface contact –
• Contact behaviors: single-body motion, sliding, rough contact, general contact, interpolation connection, friction
• Various iterative methods, hardness update method and convergence criterion method
• The composition of continuous / independent load conditions The state of convergence and intermediate results during analysis

#### Contact Analysis

• Three-dimensional surface-surface, point-surface, single surface contacts
• Various methods for identifying contacts analiz Automatic definition for each analysis case,
• Communication definition wizard, manual identification
• Suitable communication behaviors for practical work – Single-body motion, slip, general and jagged contacts, interpolation connection
• Friction coefficient, hardness module, it is possible to define the thickness of the shell to simulate the contact on both sides of the shells
• Various results including contact force and contact stress
Heat contact to simulate heat conduction between discontinuous parts Fatigue-Life Analysis

• Time domain fatigue analysis (fatigue analysis based on time dependent load and stress history)
• Damage level, fatigue life results
• Linear / very linear S-N curve

#### Linear Dynamic Analysis

• Direct method and mode method -Request Response analysis, Frequency Response analysis, Random vibration analysis, Response spectrum analysis, Forced motion analysis
• Function to convert from static to dynamic loads – Analysis function that takes into account various load conditions
• Automatic time increases
• Analysis function based on priority
• Various damping effects – Modal, structural, material, Rayleigh, frequency-dependent design spectrum database

Explicit Dynamic Analysis

Non-Linear

• Nonlinear Material: elastoplastic, hyperelastic (Mooney-Rivlin, Neo-Hookean, Polymoial, Ogden, Blatz-Ko etc.) Models
• Nonlinear Geometry: large displacement, large rotation, follower force
• Nonlinear Contact: Three-dimensional contact and friction taking into account various contact behaviors
• Scale by individual element groups
• Automatic calculation of safe time-step relative to items
• Control of convergence status and result in intermediate steps during analysis

#### Heat Transfer / Heat Stress Analysis

Continuous and transient heat transfer analysis

Non-linear heat transfer analysis function taking into account temperature-dependent materials and conditions

• Heat generation, conduction, convection, radiation, heat flux, initial temperature, constant temperature conditions
• Thermal contact function to simulate heat conduction between discontinuous parts

Heat transfer analysis function by considering cavity radiation

• Open / closed conditions

Effective transient heat transfer analysis using sensor

#### Topology Optimization Design Optimization analysis function associated with static and dynamic analysis

• Linear static analysis
• Modal analysis
• Frequency Response analysis

Analysis function taking into account the conditions of production processes –

Adjustment of design limit / restriction conditions such as stress, displacement, volume, traction direction and symmetrical conditions

Simultaneous optimization analysis taking into account the various operating and load conditions

Automatic regeneration of the analysis model without separate CAD operation and network softening function #### Size Optimization

Size optimization for any thermal / structural analysis

Property and material design variables

• Intuitive assignment of variables for size optimization
• Section size and thickness, thickness and thickness of composite materials, spring hardness, damping, mass, elasticity modulus and so on.

Design Sampling

• Various Methods (FFD, CCD, OA, LHD) and 1D Parameter Study
• Correlation between design variables and analysis response Design of dimension optimization based on approximate models
• Approximate modeling techniques (Kriging model, Polynomial Regression model)
• 2D / 3D Graphics tool for approximate model analysis
• Optimization design forecast and analysis result validation
• Automatic optimized model production 