Surface Contact 101: Block and Ramp with Friction  

Oleh:

Dearth, David R.

Jenis: Article from Bulletin/Magazine - ilmiah internasional
Dalam koleksi: Machine Design (Soft Copy ada dalam http://search.proquest.com/) vol. 83 no. 12 (Jul. 2011), page 68-69.
Topik: Finite Element Analysis; Software; Problem Solving

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Perpustakaan Pusat (Semanggi) Nomor Panggil: MM44 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

Many less-experienced users of finite-element-analysis (FEA) software often have no clue if the results they get are anywhere near the correct answer. To gain more confidence with FEA, it's a good idea to first solve simple problems with pencil and paper. Then, set up the problem in FEA and see if you get the same answer with both approaches. In the block-and-ramp problem, a block on a ramp has its weight acting down. Reaction forces comprise the normal force to the sliding surface of the block and the frictional forces acting parallel with the sliding surface. Solving this problem using FEA requires additional considerations to ensure the nonlinear solution will converge and prevent instabilities or singularities in the model. Therefore rigid stops were added above and below the block to prevent excessive slippage should the FEA user enter too much or too little horizontal force to exert on the block.

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