OPTICAL MEASUREMENT OF DENTAL AND OROFACIAL STRUCTURES

Award Information
Agency:
Department of Health and Human Services
Branch
n/a
Amount:
$99,448.00
Award Year:
1999
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
45815
Agency Tracking Number:
1R43DE011630-01A2
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
18010 SKYPARK CIR, #100, IRVINE, CA, 92614
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
JAMES MILLERD
() -
Business Contact:
(949) 553-0688
CHESS@METROLASERINC.COM
Research Institute:
n/a
Abstract
Not Available Advanced Numerical solutions has built a 2D multi-body dynamic contact analysis code capable of simultaneously modeling multiple gear meshes in transmissions. It uses many innovations to make this possible. A specially developed hierarchical solver is used to carry out implicit time integration in under 2- seconds per step for a model with 50,000 degrees for freedom. An efficient contact solver is used to solve the contact problem with multiple rigid body modes and friction in a fixed number of iterations. A special purpose programming language has been implemented to allow maximum flexibility in building complex transmission models. Preliminary tests on 2D model of a planetary system have shown that this computer program has sufficient speed to make dynamic analysis practical. It is now possible to predict vibration levels with sufficient precision to resolve the effects of tooth surface modifications. Bearing stiffness, rim geometry and other design considerations. The objective here is to verify the accuracy of the predictions made by the code. Comparisons with other methods like the boundary element method will be made. Noise and vibration comparisons will be made with experimental results available in the open literature.BENEFITS: The multi-body contract analysis tool will enable designers to improve predictions of noise and stress levels in complex geared transmissions.

* information listed above is at the time of submission.

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