RT - Journal Article T1 - Investigation of dimensional accuracy of metallic bipolar plate's micro channel in rubber pad forming process JF - mdrsjrns YR - 2016 JO - mdrsjrns VO - 15 IS - 12 UR - http://mme.modares.ac.ir/article-15-3810-en.html SP - 461 EP - 471 K1 - Metallic bipolar plates K1 - Rubber Pad forming K1 - Rubber thickness K1 - Hardness of rubber K1 - Dimensional accuracy AB - Metallic bipolar plate is one of the main parts of fuel cell. Several methods were used by researchers to manufacturing bipolar plate such as stamping, hydroforming and electromagnet forming. The effect of process parameters on dimensional accuracy of metallic bipolar plates in rubber pad forming process has been investigated in this study. ABAQUS/Standard finite element software is used to simulate the process. The accuracy of the results of simulation process is evaluated by using experimental results. To perform experimental procedures, rigid die with parallel flow field is used to form SS316 bipolar plate with 0.1 mm thick. For this purpose the effect of punch load, rubber hardness, rubber thickness and clearance between die and container on the dimensional accuracy of the formed parts is investigated. In this regard, rubber layer with hardness of 55, 70, 85 and 90 Shore A and thickness of 1.5mm up to 5.5mm were used. The result show difference between lateral and central channel depth, the amount of disparity will decrease by increasing in punch load, as a result the dimensional accuracy will increase. According to the result, increase in hardness and thickness of the rubber layer lead to improve the dimensional accuracy. Also considering clearance between die and container decrease the difference between lateral and central channel depth and eventually cause increasing in dimensional accuracy of formed part. LA eng UL http://mme.modares.ac.ir/article-15-3810-en.html M3 ER -