Extracting Relative Displacements in ANSYS Mechanical

A recurring theme in ANSYS Technical Support queries involves the separation of rigid-body from material deformations without performing an additional analysis. Many users simply assume this capability should exist as a simple post-processing query(or that in any case, this shouldn’t be a difficult operation). “Rigid-Body” displacements implies a transient dynamic analysis (as such displacements should not occur in static analyses), but as we’ll see, there are contexts within static structural environments where this concept DOES play an important engineering role. In static structural contexts, such rigid-body motion implies motion transmitted across multiple-bodies. There are two important and loosely related contexts we’ll look at; zero strain rotations of the CG and those rotations combined with strain-based displacement.

The following presentation explains the issues including the math behind it, offers solutions including useful APDL marcros, and then gives examples.

The models and macros used are in this zip file: PADT-ANSYS-Extract-Dsp-Files

PADT-ANSYS-Mechanical-Extracting-Relative-Displacements-20180404

You can also download the PDF here.

Find this interesting? This is just a small sample of PADT deep and practical understand of the entire ANSYS Suite of products.  Please consider us for your training, mentoring, and outsourced simulation services needs.

Effective Engineering Outsourcing

The effective use of outsourced engineering resources is a strategy that many successful companies are learning how to employ and doing it correctly has become a critical competency . Outsourcing allows companies to adjust to variable workloads, infuse their products with new expertise, and accelerate time to market. Unfortunately outsourcing can be very frustrating, and like any core competency, the skills needed to outsource take time and effort for companies to acquire. Here are some simple pointers on how to develop your outsourcing competency with fewer headaches and less time.

When to OutsourceMedical device testing

Urgency – You have insufficient manpower to complete all your projects on time – and they all have important business ramifications. This is a time to consider outsourcing.

Temporary Need – If your lack of manpower seems to be ongoing – then hire permanent heads. If instead, the urgency you are feeling is temporary, consider outsourcing to get you through the crunch.

Expertise – If you would like to incorporate different expertise into your products, and don’t possess that competency as part of your core team, consider outsourcing to bring in fresh expertise or an expert only when you need them.

What to OutsourceSemiconductor equipment target CAD

Non-core activities – You need to keep your team focused on what they do best: your core capabilities. Projects that don’t require your internal expertise are good candidates for outsourcing.

Proof of concept – You would like to explore some novel new concept and don’t want to distract your team, this could be a good project to outsource.

Ancillary products – If you want to develop ancillary products that augment your main product line, this can offer an opportunity to define a well contained project that is good for outsourcing.

How to OutsourceProduct Development Process

Get multiple bids – You need to find outsourcing partners that match your requirements for expertise, speed, and cost. Get proposals from several contenders and remember that these proposals say a lot about how the project will go. Define the project clearly because if you want good results from your partners, you need to clearly define the scope of the project and the outcomes you are looking for.

Crawl, walk, run – Outsourcing is a challenging skill and you should expect to go through a learning curve. To keep your risks low, start with smaller and shorter projects and then work up to more complex ones.

Look Long Term – Find partners that can serve you long-term.

PADT Can HelpReviewing an electronic design

With over 50 engineers and 350 product development projects under our belt, PADT has tremendous experience and expertise to bring to bear on your problems. Let us show you how “We Make Innovation Work”

PADT’s YouTube Videos for Rapid Prototyping

As we get this new blog, The RP Resource, off the ground, we thought we would start with some posting about some videos we have done in the past that people in the RP community might find useful.

We will start off with a simple slide show that shows some of the cool models we have built over  the years:

RP Part Examples Slideshow

 

Next up is one of our favorite side projects, a clock we made on our Stratasys FORTUS 400 prototyping system.  We took the design for a wooden pendulum clock and modified it to work with our FDM system.  Very cool:

PADT FDM Pendulum Clock

 

Sometimes the best way to make a prototype is not to print it, but to machine it.  In this video we show off our 3-Axis milling skills:

3-Axis Milling

Our most popular videos are HOW-To videos for working with the Dimension 3D Printers.  In the first video Mario shows how to load material in the Dimension, in the second one he shows how to do the same with a uPrint:

Loading a Stratasys Dimension Printer
Loading a Stratasys uPrint Printer

 

You can go to PADT’s YouTube page: www.youtube.com/padtinc to see more videos. And subscribe so you will know when we post a new video.