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[日本]以制作铝合金车辆车体的疲劳设计线为目的实施了疲劳试验。作为具有代表性的焊接接头,选定了双壳车体的空心挤压型材焊接部,单壳车体中的车顶椽子,与长横梁的补强焊接部及侧柱、侧梁的2种补强焊接部(见图1)。图1双壳车体的小型疲劳试样及实物大小的试件利用模拟空心挤压?
[Japan] A fatigue test was carried out for the purpose of producing a fatigue design line for a body of an aluminum alloy vehicle. As a representative of the welded joints, selected double-hull body hollow extruded profile welding, single-hull body roof rafters, and the long beams of the reinforced welding and the side columns, two kinds of side beams Reinforced welding (see Figure 1). Fig.1 Mini-fatigue specimen and real-size specimen of double-hull body Using simulated hollow extrusion?