recent postings here on shock levels has me recalling DDAM shock analysis.
I did several DDAMs over the years, all applying to large shipboard system, and they were the worst experiences of my professional life. We used large scale FE models, and the criteria was always that no "critical" item...
hello again
i would like to post some comments on "robust design" versus "optimization".
20 years ago, i learned a hard lesson.
i was tasked to reduce the weight of a truss structure (that supported a turbine) as much as was possible, using FEA.
this went on and on and got fairly intense...
hello
i can't get any universal agreement on this question, and it seems it should be simple.
i have a finite element model (ANSYS) of a hollow stepped shaft with a fillet at the root of the step. i model a fine mesh (at least 10 elements from OD to ID ) and looking at bending and torsion in...
hello
In reading various design specs for hollow shafts (that will see torsion and rotating bending), I have come across the design guideline that ID / OD <= 0.65.
In fact I have several Navy specs that say "ID / OD must = .65" .
Going through my books, I cannot find a rationale for this...
hello
i am stuck on an excel issue when opening space separated text files.
i have many text files that i need to open in excel as space separated files..... i manually click thru the OPEN> etc etc etc tabs to do this.
can the excel defaults be changed to automatically be set to open all *.*...
hi
i have results from an elastic analysis (using ANSYS)that indicates some regions of a structure go possibly 10ksi above the yield point under a certain load.
is there a sensible way to determine the residual stresses thoughout the structure after this load is removed (some material has...
hi there
a student of mine did a summer project on vortex tubes, and that was my first (and only) exposure to the topic. i did do some reading and scanned the internet (not extensively) because these are really interesting devices.
does anyone know what industries actually use vortex tubes in...
