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设备基础载荷分布图
LED灯引脚分布图
There are 27 user-controllable LEDs on the DE2-70 board. Eighteen red LEDs are situated above the 18 toggle switches, and eight green LEDs are found above the pushbutton switches (the 9th green LED is in the middle of the 7-segment displays). Each LED is driven directly by a pin on the Cyclone II FPGA; driving its associated pin to a high logic level turns the LED on, and driving the pin low t
螺栓预紧力对转盘轴承载荷分布的影响
螺栓预紧力对转盘轴承载荷分布的影响
通过采用非线性弹簧模拟钢球-沟道接触,在螺栓与构件接触区域施加等效均匀压力模拟螺栓预紧力,对转盘轴承的有限元模型进行了简化,通过理论和经验公式验证了该简化模型的正确性,并利用此模型分析了螺栓预紧力对轴承载荷分布的影响,结果表明:钢球-沟道最大接触载荷与螺栓预紧力成反比;内、外圈螺栓预紧力差异引起上、下排钢球-沟道接触载荷差异增大;非均布螺栓预紧力使钢球-沟道接触载荷波动加剧,使最大接触载荷及其出现的位置发生变化。