Patent MX-2008000013-A (MX)
Title: Method and device for designing member, computer program, and computer-readable recording medium.
Inventor: NIWA TOSHIYUKI
IPC: B21D22/00
Filed: 2006-06-28
Abstract: This invention provides a method for designing a member, comprising a first step of conducting, through a computer, a press molding analysis based on press molding conditions, that is, a molded product shape or a member shape, a wrinkle pressing load, a friction coefficient, material tensile strength, yield strength, a stress-strain relationship, and plate thickness, to compute molded product plate thickness distribution and post-molding strain distribution, and a second step of conducting, through the computer, a molded product performance analysis based on the state quantity of the molded product, that is, the plate thickness distribution, the post-molding strain distribution, and the molded product shape or member shape, to compute member performance. In this case, while varying at least one of the above press molding conditions, the computer repeats, by a predetermined number of times, calculation from the first step to the second step and outputs optimal press molding conditions for providing the maximum or target value of the above performance. This invention provides a method for designing a member, comprising a first step of conducting, through a computer, a press molding analysis based on press molding conditions, that is, a molded product shape or a member shape, a wrinkle pressing load, a friction coefficient, material tensile strength, yield strength, a stress-strain relationship, and plate thickness, to compute molded product plate thickness distribution and post-molding strain distribution, and a second step of conducting, through the computer, a molded product performance analysis based on the state quantity of the molded product, that is, the plate thickness distribution, the post-molding strain distribution, and the molded product shape or member shape, to compute member performance. In this case, while varying at least one of the above press molding conditions, the computer repeats, by a predetermined number of times, calculation from the first step to the second step and outputs optimal press molding conditions for providing the maximum or target value of the above performance. A power feeder installable at a reduced cost of a mobile electric room, easily assemblable, conveniently transportable, and enabling strict measurement, and its assembling method. The power feeder comprises two transportable containers standardized and having substantially the same size and stackable one on the other. An inverter board and a power input/output unit are securedly provided inside the upper container. A transformer electrically connected to the inverter board and the power input/output unit is securedly provided inside the lower container. The upper container is stacked on the lower container. A connection hole is formed in the floor of the upper container, and a connection hole is formed in the ceiling at a position facing the floor. The inverter board and the power input/output unit are electrically connected to the transformer through the connection holes. A separable connector is installed to the power lines lead out of the power input/output unit to the outside.