
numerical singularity problem - DASSAULT: ABAQUS FEA Solver
2007年9月23日 · Hi I'm currently modelling a train track insulated joint bar with abaqus and i can't fix a problem i keep encountering. The job keeps re-attempting the first increment of the first step because of problems. The model consists of two rail sections with …
pressure vessel heads - ASME (mechanical) Code Issues - Eng-Tips
2001年11月21日 · For a 2:1 elliptical head, the volume is V = Pi / 24 * D^3. For a hemispherical head, the volume is V = Pi / 12 * D^3. In all of these formulas, use consistent units. In other words, if diameter is in inches, then the volume is in inches cubed.
Looking for Definition of Rotor WR^2 1 - Eng-Tips
2006年8月28日 · The radius of gyration is the distance from the axis of rotation at which the mass can can be considered to be concentrated. If r is the physical radius of the rotating object; K^2 = r^2 for a thin walled hollow cylinder K^2 = 0.5*r^2 for a uniform solid cylinder; and K^2 = 0.4*r^2 for a uniform solid sphere.
Allowable stress of SA-193 (B7 or B7M) studs in B31.3 ... - Eng-Tips
2013年8月1日 · A r =PI/4*(OD 2-ID 2) A r =area of the ring OD and ID are inside and outside diameters A h =PI*R 2 *number of holes A h =area of all stud holes A c =A r-A h 2. Determine max tension force (F) of every stud (shown in the post of auzie5). I am just not sure about the tensile stress area per stud, as I've indicated at the beginning. 3.
Common Datums - Drafting Standards, GD&T & Tolerance …
2014年5月13日 · Suppose I had a piece of plate with 2 holes in it. Each hole is specified as a datum (in this case, datums B and C, where datum A is the large flat face of the plate). I have another feature with a positional tolerance with respect to …
Bolting Requirements in Code - ASME (mechanical) Code Issues
2003年4月25日 · When I see studs that looking a "little short", it's a situation like the crew didn't have the 4-1/2" long studs they needed for the 4" Cl 300, but they had some 4-1/4" (for 3" Cl 300) in the shop or truck - "We'll use them up." Or somebody just grabbed the wrong ones on the way out the door - it's pretty easy to do.
TYPICAL or TYP notation on drawings 4 - Eng-Tips
2006年7月25日 · 2. If you have a detail that occurs in 6 places on the drawing, you can add to the detail title "TYP 6 PL" meaning that all six places are the same. Bacically you are saying all the things that look like "THIS" mean "THIS" Wes C.-----When they broke open molecules, they found they were only stuffed with atoms.
Nastran SOL700 problem - MSC.Software: Patran | Eng-Tips
2014年1月2日 · Reason (errno) = 2. No such file or directory Please ensure your P3_TRANS.INI or site_setup file correctly points to the solver executable or that you have correctly set the proper environment variables to do the same.
Ansys error : Nonlinear - ANSYS: ANSYS Software Suite - Eng-Tips
2014年4月9日 · 1) The Solver engine was unable to converge on a solution for the nonlinear problem as constrained. 2) 2) The unconverged solution (identified as Substep 999999) is output for analysis debug purposes. Results at this time should not be used for any other purpose. 3) One or more contact pairs are detected with a friction value greater than 0.2 ...
Backfill for Buried Pipe - Pipelines, Piping and Fluid Mechanics ...
2024年11月6日 · For a 200 ft section of relatively small diameter pipeline, I'd let him do it, IF placed with careful control, 2 or three levels of placement, allowing water to drain out between, without any apparent uplifting buoying movement of the pipe during placement and a guarantee that the contractor will meet compaction requirements, or remove the fill ...