Recent content by bobslo

Hello One option is as follows: 1. goto Import Data Doctor (click on import geometry,....) and goto repaire options 2. there should be more components in list 3. remove/delete components you don´t need 4. close IDD Bye

Hi Look at this: http://www.tflex.com/ It has same math core as NX. br

I must point out some points regarding upper statements (and I do work in a company as TIER1 or OEM supplier) 1. when you do PPAP report, measured parts MUST be available to customer if he wants to do measurements by him selves. Confirmed PPAP parts need to be stored as an evidence. 2...

Process described in previous post can be used for formed shapes as well. Generally has the fixed mold defined shape and the container has flat bottom. Reason for this is in material volume deviation form "shot-to-shot" and there-fore uneven wall thickness. I never tried to use formed container...

Basically you can do this way: - suspension must be well mixed, then - pour the mixture in the container (one side of the cavity) - drive (pneumatic driven) the container to other side of the cavity (usually fixed side). This cavity needs to have a lot of small holes all over the surface and...

You can use thermoset phenolic material. Additional postcured can handle 220 degC with no problem. It is also V0 by nature. Othervise quite expensive thermoplastics must be used.

As CoryPad said; ultrasonic insertion process would be the best option. Overmolding process would produce weld lines near inserts which affect mechanical (vibration) properties of part it selves.

Epoxy resin is thermoset material. By heating it up will not melt. Temperature degradation will start direct from solid state. So use some fire; if material will soften and start to flow it´s not epoxy.

As 1gibson said: Theoretically have both cases identical end state!. But one topic must be pointed out: This is valid only if part can be approximated with a line (beam). In real world, body have 3-dimensions and temperature expansion works in 3-axis. Based on that, conclusion is that scenario...

DSC is lab test method,used mainly to found out Tg of material. It is common to use it at sampling and during re-qualification stage.

I think that no "simple" formulas are available due-to the fact that this is quite complex problem. FEA is the only available tool to get out figures.

All the weapon of QC guys are design specification. If these are not tuned with real life, then sooner or later some QC hotsot will start making noise. If parts are functional, put simple remark on the drawing or extend tolerance area.

Perhaps a suggestion for new generation design: If you use two different materials with different shrinkage and with NO ADHESION you could mold as follows: - first shot piston (lower shrinkage material) - second shot disc (with piston as insert). Material for disc should have higher shrinkage...

GenericUser you are right! Flask is using base excitation function with frequency function starting with 0Hz. Flask you should put some load (gravity) on part, and then define frequency load starting with nonzero value.

Try with phenolic.It is an "old" fashion material but it has high E-module , high strength, and no creep effect. Machining reinforced phenolic is superb. It is cheap. Back draw: weight (starts with 1.6 g/ccm).