Hai All,
Here i want a confirmation about how to modelling Corrugated Metal Hose (with Braided Cover) since many thread in this forum said that we don't need to modelling it in CAESAER II or suggest not modelling this object. Me personally can't accept that suggestion just like that, because many project that i involved are using this corrugated metal hose at tank-piping connection and pump-piping connection, and once i was have a difficulty to do analysis because i don't kow how to modelling it in CAESAR II.
Thanks to LC Peng, i have read Peng's Book "Pipe Stres Engineering", where at page 241 section 7.5.3 analysis of Hose Assembly, it said The analysis procedure follows a few basic step. (1) The hose is divided into a series of elements along the layout shape. (2) Each element is considered a bellow having spring rates as given by the manufacturer or determined as bellow elements discussed previously. (3) Because the hose is braided, the axial spring rate is very large and shall be considered inflexible, thus, only lateral spring rates and bending spring rates are considered. (4) At the center of each element a generic flexible joint is assigned and given two lateral spring and two bending springs. This is similiar to the gimbal joint with some added lateral flexibility. (5) The element are considered rigid members, having the same unit weight as the hose and its content. The system is then analyzed in the same manner as regular piping system.
Ok, i hope COADE members can give valuable confirmation...........
Regards
Tengku Syahdilan
Edited by Tengku_Syahdilan (12/26/09 12:26 AM)
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Tengku_Syahdilan
"From Failure we Learn"