Method for designing a load cell
US6351998B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2000 |
| Grant date | Mar 5, 2002 |
| Priority date | — |
| Expiry date | Sep 19, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01G3/1402
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for designing load cells of articles, such as for example vehicle components. A computer model utilizes vehicle components as flexible members that are built and loaded mathematically such that the output can be used to determine the best location to lay the strain gages on the article based upon their corresponding Wheatstone bridge output. A suitable Finite Element Model (FEM) of the component to be instrumented is provided. This model is then loaded with the same loads the component will see in practice. Each load is independently applied to the model and the results from each load are saved. The Finite Element Analysis results needed by the present invention are the maximum and minimum principal strains and principal strain angle for each valid finite element in the model. These results along with the strain gage properties and some user preferences provide input data for assessing every usable combination of elements in the FEM for sensitivity to primary loads and cross-talk of off-axis loads. The element combinations are then listed in order of decreasing sensitivity within a user specified cross-talk tolerance, and displayed to the user. The gages are laid and the l…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.