摘要
通过数学模型推导,将电热丝和聚乙烯醇缩丁醛等效为有一定厚度的均匀电阻层,简化了电热丝的仿真建模。对比电热丝建模和等效建模的仿真结果,二者在加热区域的温度偏差小,最高温度的偏差为0.1℃,证明等效建模在仿真计算上是可行的。等效建模使用稳态计算的最高温度与瞬态计算的最高温度偏差为0.9℃,而稳态计算可以大幅缩短计算时间。最后通过对比实际产品的实测数据和仿真结果,2种建模方法的加热区域温度与实测值偏差小于2.5℃,证明2种方法都具备较高的仿真精度。等效建模因建模简单、方便调整、计算效率高等优势,优先推荐作为汽车电热丝挡风玻璃产品设计的仿真方法。
Through mathematical model derivation,heating wire and polyvinyl butyral were equivalent to a certain thickness and uniform resistance layer,which simplified the simulation modeling of heating wire.Comparing the simulation results of the heating wire modeling and equivalent modeling,the temperature deviation of the modeling was small,and the maximum temperature deviation was 0.1℃,which proved that the equivalent modeling was feasible.The deviation of the maximum temperature between steady-state and transient was 0.9℃,while the steady-state could greatly reduce the calculation time.Finally,comparing product testing data and simulation solution,the temperature deviation of the two models and the product was less than 2.5℃,which proved that the two models had high simulation accuracy.Because of the advantages of less work,convenient adjustment and high efficiency,equivalent modeling was recommended as a simulation method for automotive front windshield of heating wire.
作者
薛从强
XUE Congqiang(Fuyao Glass Industry Group Co.,Ltd.,Fuqing 350315,China)
出处
《玻璃搪瓷与眼镜》
CAS
2023年第10期30-36,53,共8页
Glass Enamel & Ophthalmic Optics
关键词
电热丝
等效建模
仿真
前挡风玻璃
heating wire
equivalent modeling
simulation
front windscreen
