Abstract: The present disclosure relates to a vacuum heat-insulation device for a large low-temperature tank, the vacuum heat-insulation device having excellent heat insulation properties and vacuum stability by using a low-temperature heat-insulating material maintained in a vacuum at all times so as to store an ultra-low-temperature liquefied gas such as liquid nitrogen (LN2) or liquid hydrogen (LH2), and to a vacuum heat-insulation device for a low-temperature tank, the vacuum heat-insulation device having a flexible structure in which a vacuum jacket is partially contractible according to contraction of a low-temperature tank or a low-temperature heat-insulating layer.

Abstract: The present invention relates to a curve-combined square pressure tank with which curves are combined so as to maintain internal high pressure, improve space efficiency, and reduce the weight thereof, and to a pressure tank, in which planes and curves are combined, formed by connecting flat plate members and curved members, having a plurality of aligned tension members for connecting the flat plate members facing each other, and having stress buffer parts formed at connection parts of the flat plate members and the curved members so as to enable internal pressure to be maintained.

Abstract: According to one embodiment of the present invention, there is provided a computer executable method for automatically generating an animation of a disassembling process or assembling process of a product, having the steps of: (a) acquiring three dimensional data (8) of the product; (b) displaying, on the computer, a group structure (60) of parts contained in the three dimensional data, wherein the group structure (60) forms a tree structure wherein a part is a node; (c) creating disassembling process definition information by displaying a process editing panel (21) on the computer and allowing a user to sequentially select a part contained in the group structure (60) displayed on the computer and position it on the process editing panel (21), wherein the disassembling process definition information consists of a node (29, 30) that defines a process, and a leaf (28, 31) that defines a part; (d) generating a disassembly algorithm for the computer to generate a disassembly animation based on the disassembling p