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Found 4 results

  1. Hello, I am facing a problem while creating a 2D surface mesh in TCL Code in hypermesh. The settings done in "*interactiveremeshsurf" and "set_meshfaceparams" seem to be ignored for all surfaces and overwritten by the settings written the GUI at 2D-->Automesh-->Edge deviation. The code can be seen below: *setedgedensitylinkwithaspectratio -1 *elementorder 2 *startnotehistorystate {Automesh surfaces} *createmark surfaces 1 [lindex $List_OP($i) 0] for { set ii 1} {$ii <=[llength $List_OP($i)-1]} { incr ii} { *appendmark surfaces 1 [lindex $List_OP($i) $ii] } if { 1<=$i && $i<=3 } { # markmask, elementsize, elem_type (0 trias, 3 rtrias) *interactiveremeshsurf 1 0.25 3 3 2 1 0 set i_am 0 foreach Element $List_OP($i) { # index (von 0), elem_type, alg_type, elem_size *set_meshfaceparams $i_am 2 3 3 0 1 0.5 1 0 *automesh $i_am 1 3 incr i_am } *storemeshtodatabase 1 *ameshclearsurface *clearmark surfs 1; *endnotehistorystate {Automesh surfaces} Am I missing some command? Thanks and best regards, Henrik
  2. Hello everyone, I'm using the Mesh>Create>Tetramesh Option to create elements for a geometry. I set the element size to 10, but during meshing there are way bigger elements automatically being created...probably to reduce computational cost during meshing. This might be a problem for my future calculations. Is there a way to set fixed boundaries regarding element size, which the algorithm must not exceed during meshing? Or even better, to let the algorithm only use elements with the size=10 to fill the volume? Kind regards, Niclas_emi
  3. Hello For a topology optimization the objective and constraints (for example on displacement) have to be defined. Is there a possibility to review them and if needed, change them. For example if a 'dconstraint' is set with a upper bound=0.05, how can the value be change afterwards? Thank you in advance for your help!
  4. Hello, I am running a topology optimisation using Optistruct. The results I am getting for a standard min. compliance, constrained volume fraction run without any manufacturing constraints are invalid. The simulation runs but the results do not show any clear structural members but mostly very low density material. However, when I use minimum member size control, extrusion constraints and change the discrete value the results achieved are valid (show structural members). Is there a way to chance the minimum convergence parameters to encourage the solution to find a valid structure for on optimisation without manufacturing constraints. Thank you in advance
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