MPC, rigid body, coupling, tie

Q1: Is it ok to use MPC-beam/tie to replace rigid body constraints?
A1: Yes. The results are the same.
Q2: Is it ok to use MPC to replace *tie (surface)?
A2: MPC-tie is fine. The result is almost same except a bit more computation time – more increments.
MPC-beam can run but the results are strange. It is not ok.
Q3: Is it ok to use MPC to replace tie and rigid body at the same time.
A3: Yes. No problem.
Q4: Is it ok to add MPC to constraint half of the footing (anchor) Part? So we can extract the reaction force on that half part?
A4: Can not use MPC, over constraints.
Can use coupling but (1) reference point as control point, odb has not output for reference point (in fact RP without used in constraints/boundary will not be counted in the odb).
(2) reference point as being controlled point, odb has output but reaction force is 0.
Q5: Can we move the whole anchor without rigid body constraint? at the time we add MPC Coupling to constrain part of anchor such that we get reaction force:
A5: MPC can calculate but can not give reaction force.
Coupling use reference point as control point gives error.
Coupling use reference point as being controlled point can compute but not reaction force.

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An ABAQUS 2016 bug

What happened to ABAQUS? The ABAQUS 6.14-1 does not allow file name to have “=”. Otherwise strange error message.
ABAQUS is deviating to too much commercial and marketing. Dont lose the academic ABAQUS.

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Visio filling

If not able to fill, try:

rightclick on the shape –> select Show ShapeSheet –> Geometry1.NoFill change into FALSE

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ABAQUS temporary files

C:\Users0059095\AppData\Local\Temp

forgot to comment one line of writing file and a temporary file   *.200 (200 is the file number) was generated in that temporary file. the whole c drive is full!

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ISFOG2015 – Oslo, Norway

COFS at ISFOG2015

IMG_0242

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*Initial conditions, type=stress/ratio/solution

Noticed that element set can either be:   Part-1.elementset (in part scale) or Eleset (in Assembly scale) for ABAQUS6.14

Not sure the old versions. – I though I used Part-1.elset(in assembly scale) but it seems wrong in 6.14.

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安身守命,以待天时

上不躁而乱动

下不卑而自怜

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