News
 

AnyBody newsletter: Office chair concept, shoulder model applications, new lower extremity

In this issue:

  • Innovative office chair concept
  • Talented consultants: Join our team!
  • Upcoming webcasts
  • Tips and tricks #11: Norm measures
  • ETS shoulder prostheses
  • Meet an AnyBuddy: Soeren Toerholm
  • Twente lower extremity model
  • Muscle and joint forces in the shoulder
  • Events: Meet AnyBody at...


Innovative office chair concept

Morten Mogensen, M.Sc. in Industrial Design, recently developed an office chair concept in his master thesis at Aalborg University, Denmark, using AnyBody throughout the design process.

 

Starting with AnyBody simulation studies on support of the body, suitable positions and human movement in chairs Morten came up with a list of functional design criteria for fixed and moving parts of his chair. Subsequently the optimization facilities in AnyBody were then used to select the physical test models needed for the final design verification.

The end result is an innovative office chair concept with a documented approach on the human ergonomics developed in a cost-effective way in a short time frame.

Click here to read more about the office chair concept.

Talented consultants: Join our team!

The right candidates will be a part of a company that brings state-of-the-art knowledge and solutions on biomechanics to industries and research communities on a global scale. Read about and apply for the vacant positions here. We are looking forward to hearing from you!

Upcoming webcasts 

  • 5/6 Dec - Coupling the AnyBody and ANSYS Software Suites for Biomedical Applications
    Speakers: Kaan Divringi, Can Ozcan, and Metin Ozen, Ozen Engineering, Inc., Sunnyvale, CA
  • 29 Jan - Validation of Hip Joint Force Simulation by Gait Analysis
    Speaker: Catherine Manders, University of Southampton, UK
  • 19 Feb - Cross-country skiing biomechanics using measurement driven full-body simulations
    Speaker: Joakim Holmberg, Mid-Sweden University, Sweden

Many previous webcasts are available for download and replay here.

Tips and tricks #11: Norm measures

The AnyKinMeasureNormComb object integrates several measures into one single measure; in this example one for each grey sphere representing its distance to the red surface.

Driving this measure to zero will enforce “contact” between one of the spheres and the surface at any time during the analysis and “contact” may shift between the spheres. An AnyKinMeasureNorm- Comb object is a norm combination measure which creates a norm-like quantity of the inputs. The measure introduces a weight factor for each input and an offset value. Using the right coefficients it will try to enforce one of the spheres to be in “contact” with the plane of surface at any time.
 
Please note that this is not a traditional surface to surface joint, but in some cases it can be used instead. When using this measure, the parameters of the measure should be carefully adjusted. the Contact can be more or less rigid and exact depending on the parameters of the AnyKinMeasureNormComb.

View the source code of this example here.

ETS shoulder prostheses

Pierre-Olivier Lemieux from the École de technologie Supérieure in Montreal, Canada, visited the AnyBody Research Group in October to cooperate on improvement of shoulder prostheses.

 

The background of the work is that patients with total rotator cuff deficiency function rather poorly with the current prosthesis designs and typically will not be able to comb their hair or brush their teeth. It is the hope that systematic simulation may enable us to develop a superior prosthesis design to improve this situation.

Meet an AnyBuddy:
Soeren Toerholm

Søren, 37, is Support Manager in AnyBody Technology. He holds a MSc and a PhD in mechanical engineering from Aalborg University, Denmark, where he became Associate Research Professor prior to joining AnyBody Technology. Søren’s primary former academic interest is numeric analysis and optimization of structural acoustic problems.

In 1999 Søren joined the AnyBody Research project working on shoulder modelling, seated human, car package design models and repository structuring. He co-founded AnyBody Technology and joined the company in 2004 to work on clients model as a consultant and supporter.

Søren lives with his wife and two children in a suburb 3 km from the office in Aalborg. In his spare time Søren is busy reconstructing their home by himself. This work-in- progress started out 1 1/2 years ago with a typical dull one floor house from the sixties. The house is now gradually turning into a modern stylish two store bungalow - Søren added an the extra floor to the house while replacing the roof. Søren has - as you may have guessed - a vivid interest in modern architecture and design.  


Søren in front of own handmade stairs leading up to the 2nd floor. The banister - also handmade inhouse - still needs to the mounted.

Twente lower extremity model

The AnyBody Group is continuing a fruitful cooperation with the University of Twente through Karin Gorter, a Dutch master student, who is currently visiting the group.

Karin is implementing a new lower extremity model based on a set of consistent anatomical data collected recently by Martijn Klein Horsman, a Ph.D. student from Twente. After an initial data check and validation we expect that this model will make its way into the repository and replace the existing lower extremity model.

Muscle and joint forces in the shoulder

Alexander Nolte, a German student at Trauma Center Murnau, Germany, and Paracelsus Private Medical University Salzburg, Austria, recently completed his Diploma thesis Analysis of the muscle and joint forces in the shoulder joint using the AnyBody simulation model.

Alexander modeled shoulder abduction, shoulder flexion, and the lifting of a coffee pot with and without weight. The results of simulation for the abduction and “lifting a coffee pot” were similar to measured joint reaction forces obtained by the Bergmann's endoprosthesis study.

In contrast, the simulation of the flexion indicated much larger forces than Bergmann measured and a rotated force vector pointing into the socket of the joint. Alexander speculates that the cause for this discrepancy between  model and experiment might be due to some muscles not functioning in the patient after surgery or that the motion in the collarbone-scapula and sternum-collarbone joints were not taken into account in the simulation.

Events: Meet AnyBody at...

ANSYS Conference & 25th CADFEM Users´ Meeting
Nov 21-23, Dresden, Germany

Cervical Spine Research Society Annual Meeting,
Nov 29-Dec 1, San Francisco, CA

World Congress on Neck Pain,
Jan 20-22, Los Angeles, CA

Innovative Seating Conference,
Feb 11-14, Frankfurt, Germany

Annual Meeting of the Orthopaedic Research Society,
Mar 2-5, San Francisco, CA

- - - o o o - - -

Sincerely
The AnyBody Team.

As usual, if you have news, questions or comments, please do not hesitate to contact us.


This newsletter is sent to recipients who have expressed an interest in our technology. If you prefer not to receive newsletters, please let us know and we shall remove you from the mailing list.

AnyBody Technology A/S · Niels Jernes vej 10 · DK-9220 Aalborg Ø · Denmark · Tel. +45 9635 4286 · Fax. +45 9635 4599            Sitemap