Webpage/simple__rod__beam_8jou_source.html

reset

set duplicate block elements on


brick x 1 y 5 z 1


create vertex -0.5 -2.5 5 color

create curve vertex 9 vertex 3


create vertex 0.5 -2.5 5 color

create curve vertex 11 vertex 2


merge vertex 3 with vertex 10

merge vertex 2 with vertex 12


# Material properties, units: N, mm

{young_modulus = 10}

{poisson_ratio = 0.2}

block 1 volume 1

block 1 name 'MAT_ELASTIC'

block 1 attribute count 2

block 1 attribute index 1 {young_modulus}

block 1 attribute index 2 {poisson_ratio}


# Density for mass matrix calculation

{density = 1e-3}

block 2 volume 1

block 2 name 'BODY_FORCES'

block 2 attribute count 4

block 2 attribute index 1 {density} #material density

block 2 attribute index 2 0     #constant acceleration in x-direction

block 2 attribute index 3 0     #constant acceleration in y-direction

block 2 attribute index 4 0     #constant acceleration in z-direction


# Material properties for ROD, units: N, mm

{bar_id=13}

{young_modulus_rod = 1} # 100 makes cables too stiff to be able to stretch

{cross_section_area = 5}    # hand calculated from the geometry

{pre_stress=0.1}        # unit of stress, N/mm2

block 3 curve {bar_id} 14

block 3 name 'ROD'

block 3 attribute count 3

block 3 attribute index 1 {young_modulus_rod}

block 3 attribute index 2 {cross_section_area}

block 3 attribute index 3 {pre_stress}


# Mesh

{fixed_vertex_id=9}

curve {bar_id} 14 interval 1

curve {bar_id} 14 scheme bias factor 1 start vertex {fixed_vertex_id}

mesh curve {bar_id} 14


volume 1 scheme tetmesh

volume 1 size auto factor 7

mesh volume 1


# Boundary conditions


create displacement on surface 3 dof 1 dof 2 dof 3 fix 0


create displacement on vertex 9 dof 1 dof 2 dof 3 fix 0

create displacement on vertex 11 dof 1 dof 2 dof 3 fix 0


# Pressures need to be created seperately to avoid Cubit bug

#{force_vertex_id=2}

#create force on vertex {force_vertex_id} force value 7 direction curve 1


create pressure on surface 1 magnitude 0.5


#rotate volume 1 angle 65 about z include_merged

#rotate volume 1 angle 65 about x include_merged


save as "/Users/hoangnguyen/mofem_install/mofem-cephas/mofem/users_modules/basic_finite_elements/elasticity/simple_rod_beam.cub" overwrite