機械類汽車轉(zhuǎn)向系統(tǒng)外文文獻及翻譯-汽車設計-全文預覽
【正文】 is, stresses must be distributed throughout the structure as evenly as possible. Modern numerical analysis methods such as FEA allow a very detailed analysis of system behavior, provide costefficient support for the plex process of optimization and thus make a huge contribution to advances in lightweight construction. Packaging, safety considerations, reproducibility and price place restrictions on the degree of weight reduction achievable. The broad range of expertise available to Krupp Presta AG allows the pany to analyze customer specifications for steering systems and provide appropriate solutions. 2 Requirements to be met by steering systems The steering is an important part of the feel of a car. The steering system should make driving an enjoyable experience with no unpleasant vibration from the road surface while guaranteeing the required hand sing. It is also important that high safety requirements be met, both under normal conditions and in crash situations. The key criteria for the steering system are thus as follows:rolling friction, torsional stiffness /strength, Damping, temperature, corrosion, durability / fatigue, weight. Crash kinematics and energy absorption steering column requirements:natural frequency / stiffness, mass, damping, space, strength (crash, misuse), ergonomics, handling, acoustics, crash kinematics and energy absorption. Other basic conditions:interfaces with adjacent ponents, installation, joining techniques, price. 3 Materials ma terial light weighting can be achieved by using either stronger or lighter material. When stiffness or natural frequency are Important sizing criteria, low density materials with a high modulus of elasticity by quired. Nonexotic materials must be selected which are readily recyclable, low in price and display good requirements are set by the manufacturing and joining processes. Steel, aluminum, magnesium and a variety of plastics are the materials of choice for steering systems. Low specific gravity, high corrosion resistance, low fabricating costs, high
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