構造解析プログラム v-struct3.0†研シンポジウム － vcadシステム研究2007...
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理研シンポジウム理研シンポジウム － VCADシステム研究２００７〒３５１－０１９８ 埼玉県和光市広沢２－１ http://vcad-hpsv.riken.jp/
構造解析プログラム V-Struct3.0.5Structural Analysis Program V-Struct3.0.5
加工成形シミュレーションチームZhigang Sun [email protected]
Naghi Esmaeili [email protected] Teodosiu [email protected]
V-Struct 3.0.5 is a new version of the structural analysis program on VCAD system-V-Struct, which was newly released on June 29, 2007. This new version made it possible to utilize the own pre-post processor of V-Struct for setting BC and visualizing analysis result.
VV--StructStruct 3.0.5 is a new version of the structural analysis program on VC3.0.5 is a new version of the structural analysis program on VCAD systemAD system--VV--StructStruct, , which was newly released on June 29, 2007. This new version which was newly released on June 29, 2007. This new version made it possible to utilize the made it possible to utilize the own preown pre--post processor of Vpost processor of V--StructStruct for setting BC and visualizing analysis result.for setting BC and visualizing analysis result.
Specification of V-Struct 3.0.5 FEM formulation
Procedure of structural analysis using V-Struct 3.0.5 on VCAD system
Example of structural analysis using V-Struct 3.0.5
Analysis function Static linear elastic analysis corresponding to largedisplacement and large rotation deformations.
Analysis method Static-explicit FEMUpdated Lagrange formulation
Available FE model DHE modelMixed-type-FE model
Operating system Windows
Language Compaq Visual Fortran
Compiler Compag Visual Fortran 6.6 for Windows
∫ ∫∫
∫ ∫∫
+=∂
+=∂∂
t
t
S v iiiiijV ji
S v iiii
j
i
V ji
dVvbdSvtdVL
dVvbdSvtdVxv
δρδΠ
δρδδ
Π_.
_.
_.
_.
．
．
)21
2( kljiikjliljkjikl
kljiklji
GC
DC
δδν
νδδδδ
τ
−++=
＝。
)(21
)(
jlikiljkjkilikjljikl
kljikljilk
kljilkji
ikjkkijkkijkjiji
S
LSCLS
LDD
δσδσδσδσ
τσσστΠ
−−−=
+=+=
+−−= o
o．
∫ ∫∫ +=∂+tS v iiiiijkljiklV jikl dVvbdSvtdVLLSC δρδ
_.
_.
)(
.
FKU =
Principle of virtual work in rate form:
Constitutive equation:
Transfer of stress rate:
Alternative form of the principle of virtual work:
Stiffness equation for whole body:
V: domain of deformation body
at current configuration
St: boundary of the domain on which
traction is prescribed
v: velocity of a particle within V
tractionofratet :_.
massunitperforcebodyofrateb :_.
density:ρ
tresssominalnofrate:.
Π
tresssKirchhoffofrateJaumann:o
τ
stressCauchy:σ
G: shear modulus of elasticity
v: Piosson ratio
L: velocity gradient
D: symmetric part of L
W: antisymmetric part of L
K: stiffness matrix
U: vector of nodal velocity
forcenodalofrateofvector:.
F
Generate .vcar model Generate .dhe model
Set boundary conditions
...
Generate Mixed-type-FE modelusing Mesh_converter
Generate DHE model and set BCusing V-Struct-Pre
Perform structural analysis using V-Struct3.0.5
Visualize analysis result using V-Struct-Post
*.iges
*.brep
*.unv *_MIX.unv
*[n].unv
*_MIX[n].unv
DHE model
Mixed-type-FE model
Mesh_converter V-Struct 3.0.5 V-Struct-Post
Module for generating *.vobj modelModule for generating *.vobj model
Module for generating *.vcar modelModule for generating *.vcar model
Module for handling *.vcar modelModule for handling *.vcar model
Module for generating *.dhe modelModule for generating *.dhe model
Module for setting BCModule for setting BC
V-Struct-Pre