Newbie Questions -- Solver Fails (and others)
Verfasst: Do 13. Dez 2012, 22:38
I'm hoping you folks can help me get going. I'm a new to Z88 Aurora and to FEM in general. Three questions at different levels:
1) I'm trying to run V2 under Windows XP SP3 on an old laptop with a single processor maxed out at 512 MB RAM. Is that already enough to cause my problems -- (2) below? (When it loads, it says it's using 389 MB. Less conveniently I could use a faster machine with dual processors and 3 GB, still under XP.)
2) I started working my way through the examples, but am not having much luck. The first example won't run the solver -- says "Faulty boundary conditions!" -- presumably because it hasn't asked me to enter any constraints. More importantly, in the second example (which leads you through entering constraints) the solver successfully starts but then quits with a Windows error message that "z88r.exe has encountered a problem and needs to close" and the error message, "Z88R : Error : Z88R! Please look at z88r.log!" (I've appended the contents of both the black progress window and z88r.log, in case they are of any help.) Any idea what I'm doing wrong?
3) General Question: I'm hoping to model in 3D a right-circular cylinder of glass (telescope mirror) whose weight is supported at several points around the middle of the edge. (I already know the support forces, which sum to the weight of course.) It's not at all clear to me how to build up this object or what kind of elements to use. Suggestions would be greatly appreciated.
Thanks! -- jclarkw
Progress Window:
*************************************************
* z88a2r Converter *
* *
> Input file z88i1.txt built successfully.
> Input file z88mat.txt built successfully.
> Input file z88i2.txt built successfully.
> Input file z88i5.txt built successfully.
> Input file z88elp.txt built successfully.
> Input file z88i5.txt built successfully.
> Input file z88int.txt built successfully.
> Input file z88man.txt built successfully.
* *
* Converter ran successfully. *
*************************************************
***** *** ***
* * * * *
* *** ***
* * * * *
***** *** ***
by Prof.Dr. FRANK RIEG (C), Germany,2012 V15.0
Z88R the linear solver for Windows, LINUX und Mac OS X
Floats: 8 Bytes
Integers: 4 Bytes
Pointers: 4 Bytes
reading solver parameter file Z88MAN.TXT
*** SICCG solver with sparse matrix storing ***
*** test mode ***
reading structure data file Z88I1.TXT
reading coordinates
reading element informations
*** start Z88AI ***
program allocated 0 MB memory
program allocated 0 MB dynamic memory
pointers assembled
vector GS needs 7503 elements
vector KOI needs 588 elements
Z88R.LOG:
opening file Z88.DYN
memory id 30 allocated
memory id 31 allocated
memory id 32 allocated
memory id 60 allocated
memory id 61 allocated
memory id 62 allocated
memory id 63 allocated
memory id 64 allocated
memory id 65 allocated
start reading function RI188I
reading Z88I1.TXT
reading coordinates
reading element information
Z88I1.TXT read, leaving reading function RI188I
start Z88AI
leaving Z88AI
vector GS needs 7503 Elemente
vector KOI needs 588 Elemente
1) I'm trying to run V2 under Windows XP SP3 on an old laptop with a single processor maxed out at 512 MB RAM. Is that already enough to cause my problems -- (2) below? (When it loads, it says it's using 389 MB. Less conveniently I could use a faster machine with dual processors and 3 GB, still under XP.)
2) I started working my way through the examples, but am not having much luck. The first example won't run the solver -- says "Faulty boundary conditions!" -- presumably because it hasn't asked me to enter any constraints. More importantly, in the second example (which leads you through entering constraints) the solver successfully starts but then quits with a Windows error message that "z88r.exe has encountered a problem and needs to close" and the error message, "Z88R : Error : Z88R! Please look at z88r.log!" (I've appended the contents of both the black progress window and z88r.log, in case they are of any help.) Any idea what I'm doing wrong?
3) General Question: I'm hoping to model in 3D a right-circular cylinder of glass (telescope mirror) whose weight is supported at several points around the middle of the edge. (I already know the support forces, which sum to the weight of course.) It's not at all clear to me how to build up this object or what kind of elements to use. Suggestions would be greatly appreciated.
Thanks! -- jclarkw
Progress Window:
*************************************************
* z88a2r Converter *
* *
> Input file z88i1.txt built successfully.
> Input file z88mat.txt built successfully.
> Input file z88i2.txt built successfully.
> Input file z88i5.txt built successfully.
> Input file z88elp.txt built successfully.
> Input file z88i5.txt built successfully.
> Input file z88int.txt built successfully.
> Input file z88man.txt built successfully.
* *
* Converter ran successfully. *
*************************************************
***** *** ***
* * * * *
* *** ***
* * * * *
***** *** ***
by Prof.Dr. FRANK RIEG (C), Germany,2012 V15.0
Z88R the linear solver for Windows, LINUX und Mac OS X
Floats: 8 Bytes
Integers: 4 Bytes
Pointers: 4 Bytes
reading solver parameter file Z88MAN.TXT
*** SICCG solver with sparse matrix storing ***
*** test mode ***
reading structure data file Z88I1.TXT
reading coordinates
reading element informations
*** start Z88AI ***
program allocated 0 MB memory
program allocated 0 MB dynamic memory
pointers assembled
vector GS needs 7503 elements
vector KOI needs 588 elements
Z88R.LOG:
opening file Z88.DYN
memory id 30 allocated
memory id 31 allocated
memory id 32 allocated
memory id 60 allocated
memory id 61 allocated
memory id 62 allocated
memory id 63 allocated
memory id 64 allocated
memory id 65 allocated
start reading function RI188I
reading Z88I1.TXT
reading coordinates
reading element information
Z88I1.TXT read, leaving reading function RI188I
start Z88AI
leaving Z88AI
vector GS needs 7503 Elemente
vector KOI needs 588 Elemente