The process characteristics of heat treatment of aluminum alloy auto body sheet and the working principle of air cushion furnace were introduced.The process position and irreplaceable role of air cushion furnace in th...The process characteristics of heat treatment of aluminum alloy auto body sheet and the working principle of air cushion furnace were introduced.The process position and irreplaceable role of air cushion furnace in the aluminum alloy auto body sheet production was pointed out after the difficulty and key points in the whole production process of auto body sheet were studied.Then the development process of air cushion furnace line of aluminum alloy sheet was reviewed,summarized and divided to two stages.Based on the research of air cushion furnace,the key technology of it was analyzed,then the key points on process,equipment and control models of air cushion furnace for aluminum alloy auto body sheet in future were put forward.With the rapid development of automotive industry,there will be certainly a new upsurge of research and application of air cushion furnace for heat treatment of aluminum alloy auto body sheet.展开更多
For Lightweight body,sound radiation and sound insulation performance have negative effects on interior noise by the deterioration of local stiffness and modality.So the research on the active control of vibration and...For Lightweight body,sound radiation and sound insulation performance have negative effects on interior noise by the deterioration of local stiffness and modality.So the research on the active control of vibration and noise for car body panels is useful for engineering.Analysis and active control of booming noise in car is researched by using a new active damping vibration reduction technology named smart constrained layer damping(SCLD).According to the vibration characters of body roof,an optimal placement of actuators is distributed.Based on dSPACE hardware in loop environment,an adaptive active control system is designed.Selecting vibration signals of engine mounting point as the reference input of adaptive controller,an active control experiment of booming noise for mini-car is carried out.Experimental results show that,when the engine speed is at 3700 RPM and4250RPM,the interior booming noise decreases 4.2dB(A),and 3.5dB(A) separately.It proposes new methods and techniques for intelligent control of car body NVH in the future.展开更多
在4种高精铝板带（罐料、PS／CTP版基板、航空航天器板、汽车车身板）中，除汽车车身板（ABS，Auto Body Sheet）正处于高速增长期外，其他3种全世界的消费量都已处于平稳期，特别是在工业发达国家，这种快速增长期将延续到2025年或更...在4种高精铝板带（罐料、PS／CTP版基板、航空航天器板、汽车车身板）中，除汽车车身板（ABS，Auto Body Sheet）正处于高速增长期外，其他3种全世界的消费量都已处于平稳期，特别是在工业发达国家，这种快速增长期将延续到2025年或更长一些时间。新世纪初以来，随着气侯变暖趋势日益严重，节能减排受到全世界人们、各种组织、团体、政府的普遍关注，欧盟要求在其境内销售的乘人车在2020年应达到C02排放量为90g／km，2030年应达到613g／km，2016年的油耗应不超过4．5L／（100km）。展开更多
文摘The process characteristics of heat treatment of aluminum alloy auto body sheet and the working principle of air cushion furnace were introduced.The process position and irreplaceable role of air cushion furnace in the aluminum alloy auto body sheet production was pointed out after the difficulty and key points in the whole production process of auto body sheet were studied.Then the development process of air cushion furnace line of aluminum alloy sheet was reviewed,summarized and divided to two stages.Based on the research of air cushion furnace,the key technology of it was analyzed,then the key points on process,equipment and control models of air cushion furnace for aluminum alloy auto body sheet in future were put forward.With the rapid development of automotive industry,there will be certainly a new upsurge of research and application of air cushion furnace for heat treatment of aluminum alloy auto body sheet.
基金Supported by the State Key Development Program for Basic Research of China(No.2010CB736104)the National High Technology Research and Development Program of China(No.2012AA111803)
文摘For Lightweight body,sound radiation and sound insulation performance have negative effects on interior noise by the deterioration of local stiffness and modality.So the research on the active control of vibration and noise for car body panels is useful for engineering.Analysis and active control of booming noise in car is researched by using a new active damping vibration reduction technology named smart constrained layer damping(SCLD).According to the vibration characters of body roof,an optimal placement of actuators is distributed.Based on dSPACE hardware in loop environment,an adaptive active control system is designed.Selecting vibration signals of engine mounting point as the reference input of adaptive controller,an active control experiment of booming noise for mini-car is carried out.Experimental results show that,when the engine speed is at 3700 RPM and4250RPM,the interior booming noise decreases 4.2dB(A),and 3.5dB(A) separately.It proposes new methods and techniques for intelligent control of car body NVH in the future.
文摘在4种高精铝板带（罐料、PS／CTP版基板、航空航天器板、汽车车身板）中，除汽车车身板（ABS，Auto Body Sheet）正处于高速增长期外，其他3种全世界的消费量都已处于平稳期，特别是在工业发达国家，这种快速增长期将延续到2025年或更长一些时间。新世纪初以来，随着气侯变暖趋势日益严重，节能减排受到全世界人们、各种组织、团体、政府的普遍关注，欧盟要求在其境内销售的乘人车在2020年应达到C02排放量为90g／km，2030年应达到613g／km，2016年的油耗应不超过4．5L／（100km）。
