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Fast simulation speed – DAFUL super solver can accelerate the simulation speed for a large degree of freedom system. The speed can be further accelerated under SMP and MPP parallel processing environment.

Reliable and accurate solution – Implicit integration method yields more stable and accurate solution.

Tightly integrated solver of multi-body and structural analysis. The governing equations of equilibrium for rigid body, flexible body, force entities, and joints are solved simultaneously.

Good for large degrees of freedom systems – Customized sparse solver for the mixed system of rigid and flexible bodies has been implemented to handle the large degrees of freedom systems.

Various modeling elements and entities for structural analysis and multi-body analysis models.

3D surface contact – DAFUL supports both surface representations of NURBS and facet types

Modal and nodal flexible body methods - DAFUL supports both nodal and modal flexible bodies which can be easily switchable from one to another..

Easy interface with other software – DAFUL can be interfaced with other software by using user subroutines.

Kinematic analysis of mechanical systems

Vehicle dynamics

Large deformation structural analysis

High speed large rotation systems

3D contact systems

Coupled systems of multi-body motion and structural deformation

Long duration dynamic analysis problems

게시판 리스트
Analysis
Dynamics/Kinematics Analysis Dynamics analysis is usually carried out to provide the solution to nonlinear dynamics problems when material nonlinearity, geometric nonlinear effects or changes in boundary conditions occur due to dynamic events such as a contact and variable external loads. Inertia, damping, spring and constrained forces are considered in the equation of motion. Implicit integration method is used. And kinematics analysis automatically carried out when the degree of freedom is zero.
Static Analysis Static analysis is usually carried out to provide the solution to steady state while all nonlinear effects. Spring and constrained forces are considered in the equation of motion. One step or multi-step methods in time domain is used. Quasi-static analysis is possible by using multi-step method.
게시판 리스트
Parallel Process
Shared Memory Parallel Process (SMP) Shared memory is simultaneously accessed by multiple threads of one program. Solver automatically generates partitions and allows them to be executed at the same time. There is no communication overhead among threads.
Massively Parallel Process (MPP) A massively parallel process automatically generates partitions and allows them to be executed at the same time. Each partition is allocated to a different computer with independent memory. Therefore, communication among different computers is necessary. Since memory is allocated to different computers, a large scale problem can be solved. SMP parallel processing is carried out within one computer.
게시판 리스트
Contents DAFUL.Solver Conventional Method
Integrator Method Implicit Explicit
Used Memory Large Small
Stability Absolute stable Depend on system
Stepsize Large Very small
Accuracy Good Poor in acceleration
Nodal Formulation Co-rotational element with MRF Co-rotational element
Advantage Large deformation problems with geometric non-linearity High-speed rotational problems Long-time simulation problems Large degree of freedom
게시판 리스트
Contents DAFUL.Solver Conventional Method
Generalized coordinate Nodal coordinate Modal coordinate
Solving time Long Short
Large deformation Good No good
Local deformation Good No good
Dynamics strain/stress Good Middle with dynamic correction
Material non-linearity Possible Impossible
Plastic deformation Possible Impossible
BC assumption Needless Necessary
Contact Good No good
Pre-process Mesh Mesh and Eigenvalue analysis