Material characteristics that a foamed filler material (s) to be filled in a frame cross section (fr) should have are discussed. By using a material complying with the characteristics, the energy absorbability of the frame (fr) is effectively enhanced. In a frame structure (fr) for vehicle bodies in which a filler material is filled in at least part of the cross section of a frame, the filler material is set to a mean compressive strength of not less than 4 MPa and/or a maximum bending strength of not less than 10 MPa. More particularly, the filler material is set to a mean compressive strength of not less than 5 MPa and/or a maximum bending strength of 60 MPa.
The present invention relates to a lightweight part, particularly a vehicle body part, which includes sheet steel and light metal. In order to improve the manufacturability as well as the strength and rigidity properties, the sheet steel (6 through 8) is implemented as thin-walled, particularly has a thickness of less than 2 mm, and has at least one free area which is provided locally with a cast or sintered reinforcement structure (15) made of light metal.
A frame deformation control apparatus to be used for a frame being constructed of a plurality of sub-frames, the frame deformation control apparatus has a joint unit connecting adjoining sub-frames, the joint unit allows the adjoining sub-frames to turn around the joint unit, a detector measuring a bending moment to be added to the joint unit, and a brake unit restricting the turn around the joint unit of the adjoining sub-frames.
In one aspect of the present invention, a system for performing work has a hydraulic circuit adapted to store energy within a hose. The hose has an elastic inner layer pre-tensioned by a radial tensioning component disposed within the hose and at least one reinforcing layer of elastic thread disposed around and compressing the inner layer. A hydraulic fluid is in the circuit and in communication with the hose, the radial tensioning component and with a hydraulic actuator for doing the work. The circuit has a mechanism for pressurizing the hydraulic circuit in order to perform the work.
A system for performing work having a hydraulic circuit has a length of hose, a hydraulic fluid in the circuit in communication with the hose and with a hydraulic actuator for doing the work, and a mechanism for pressurizing the hydraulic circuit such that at least 50 foot pounds of energy is stored within the hose to perform the work.
