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GB/T 28046.3-2011英文版/English/翻译/情况条件和试验机械负荷
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本文摘要:ChinaAutoRegs|GB/T 28046.3-2011英文版/English/翻译/门路车辆 电气及电子设备的情况条件和试验 第3部门ChinaAutoRegs|GB/T 28046.3-2011英文版/English/翻译/门路车辆 电气及电子设备的情况条件和试验 第3部门:机械负荷Road Vehicles - Environmental Conditions and Testing for Electrical and Electronic Equipment

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ChinaAutoRegs|GB/T 28046.3-2011英文版/English/翻译/门路车辆 电气及电子设备的情况条件和试验 第3部门ChinaAutoRegs|GB/T 28046.3-2011英文版/English/翻译/门路车辆 电气及电子设备的情况条件和试验 第3部门:机械负荷Road Vehicles - Environmental Conditions and Testing for Electrical and Electronic Equipment-Part 3: Mechanical LoadsGB/T 28046.1-2011 英文版 门路车辆 电气及电子设备的情况条件和试验 第1部门:一般划定Road vehicles-Environmental conditions and testing for electrical and electronic equipment-Part 1: GeneralGB/T 28046.2-2019 英文版 门路车辆电气及电子设备的情况条件和试验第2部门:电气负荷Road Vehicles - Environmental Conditions and Testing for Electrical and Electronic Equipment - Part 2: Electrical LoadsGB/T 28046.2-2011 英文版 门路车辆 电气及电子设备的情况条件和试验 第2部门:电气负荷Road vehicles-Environmental conditions and testing for electrical and electronic equipment-Part 2: Electrical loadsGB/T 28046.3-2011 英文版 门路车辆 电气及电子设备的情况条件和试验 第3部门:机械负荷Road Vehicles - Environmental Conditions and Testing for Electrical and Electronic Equipment-Part 3: Mechanical LoadsGB/T 28046.4-2011 英文版 门路车辆 电气及电子设备的情况条件和试验 第4部门:气候负荷Road Vehicles - Environmental Conditions and Testing for Electrical and Electronic Equipment-Part 4: Climatic LoadsGB/T 28046.5-2013 英文版 门路车辆 电气及电子设备的情况条件和试验 第5部门:化学负荷Road Vehicles - Environmental Conditions and Testing for Electrical and Electronic Equipment-Part 5: Chemical Loads1SCOPEThis part describes the potential mechanical environment loads for the systems/components mounted on/in the vehicle’s specific locations, and specifies tests and requirementsThis part applies to electrical and electronic systems/components for motor vehicles.2NORMATIVE REFERENCESThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.GB/T 2423.6Environmental testing for electric and electronic products - Part 2: Test methods - Test Eb and guidance: Bump (GB/T 2423.6-1995, IEC 60068-2-29: 1987, IDT)GB/T 2423.8Environmental testing for electric and electronic products - Part 2:Test methods - Test Ed: Free fall (GB/T 2423.8-1995, IEC 60068-2-32: 1995, IDT)GB/T 2423.10Environmental testing for electric and electronic products - Part 2: Tests methods - Test Fc: Vibration (sinusoidal) (GB/T 2423.10-2008, IEC 60068-2-6: 1995, IDT)GB/T 2423.22Environmental testing for electric and electronic products - Part 2: Test methods - Test N: Change of temperature (GB/T 2423.22-2002, IEC 60068-2-14: 1984, IDT)GB/T 2423.56Environmental testing for electric and electronic products - Part 2: Test methods - Test Fh: Vibration, broad-band random (digital control) and guidance (GB/T 2423.56-2006, IEC 60068-2-64: 1993, IDT)GB/T 2423.58Environmental testing for electric and electronic products - Part 2: Tests -Test Fi: Vibration - Mixed Mode (GB/T 2423.58-2008, IEC 60068-2-80: 2005, IDT)GB/T 28046.1Road vehicles-Environmental conditions and testing for electrical and electronic equipment-Part 1: General (GB/T 28046.1-2011, ISO 16750-1: 2006, MOD)GB/T 28046.4Road vehicles-Environmental conditions and testing for electrical and electronic equipment-Part 4: Climatic loads (GB/T 28046.4-2011, ISO 16750-4: 2006, MOD)3 术语和界说GB/T 28046. 1 给出的术语和界说适用于本文件。4 试验和要求4.1 振动4.1.1 一般划定按电气和电子设备在车上应用情况划定了差别振动严酷度的试验方法。车辆生产商和供应商可凭据特定的安装位置选择试验方法、情况温度和振动参数。

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划定的量级用于直接安装在所界说的位置。使用支架安装会提高或降低负荷,如果受试装置(DUT)在车上使用支架,在振动和机械打击试验时应带支架举行。对DUT 举行振动试验时应将样品安装在振动台面上,将安装方法记载在陈诉中。正弦振动和正弦加随机的正弦部门扫频速率为0.5 oct/mino 推荐的振动试验用于制止在使用历程中因疲劳引起的失效和损坏,本部门不包罗特殊的磨损试验要求。

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在划定频率规模外的负荷应单独思量。注s 对大而重的DUT ,因刚性安装和动态响应,按本部门举行的振动试验负荷的偏差可能导致在振动台上的激励差别于实车,用平均控制方法可以将偏差最小化〈见附录A)。经协商可按GB/T 2423.56 接纳加权平均值控制方法。DUT 在振动试验期间的温度循环按GB/T 2423.22 ,并按图l通电运行。

经协商可在恒温条件下举行试验。如图1 所示在整个装置到达Tmin后使DUT 通电运行,用尽可能短的时间检查装置的功效(使DUT的自产热量最小),DUT 的附加通电运行在循环的第210 min 和第410 min 间举行,,对试验箱不允许举行辅助烘干。车辆振动应力可能在最低温度或最高温度下泛起,在试验中应模拟机械应力和温度变化应力同时作用,失效机理为:例如系统/组件的塑料件经高温变软且不能蒙受加速度。


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