Recent advancements in additive manufacturing(AM)have revolutionized the design and production of complex engineering microstructures.Despite these advancements,their mathematical modeling and computational analysis r...Recent advancements in additive manufacturing(AM)have revolutionized the design and production of complex engineering microstructures.Despite these advancements,their mathematical modeling and computational analysis remain significant challenges.This research aims to develop an effective computational method for analyzing the free vibration of functionally graded(FG)microplates under high temperatures while resting on a Pasternak foundation(PF).This formulation leverages a new thirdorder shear deformation theory(new TSDT)for improved accuracy without requiring shear correction factors.Additionally,the modified couple stress theory(MCST)is incorporated to account for sizedependent effects in microplates.The PF is characterized by two parameters including spring stiffness(k_(w))and shear layer stiffness(k_(s)).To validate the proposed method,the results obtained are compared with those of the existing literature.Furthermore,numerical examples explore the influence of various factors on the high-temperature free vibration of FG microplates.These factors include the length scale parameter(l),geometric dimensions,material properties,and the presence of the elastic foundation.The findings significantly enhance our comprehension of the free vibration of FG microplates in high thermal environments.In addition,the findings significantly enhance our comprehension of the free vibration of FG microplates in high thermal environments.In addition,the results of this research will have great potential in military and defense applications such as components of submarines,fighter aircraft,and missiles.展开更多
在电路建模方面,集成滤波电感变压器缺少能完善其表达电量特性的器件,且其建模方式复杂、计算步骤和计算时间冗长。为此,提出了一种利用电感矩阵作为中间桥梁的新型磁场-电路耦合法。首先分析了集成滤波电感变压器的绕组结构;然后以求...在电路建模方面,集成滤波电感变压器缺少能完善其表达电量特性的器件,且其建模方式复杂、计算步骤和计算时间冗长。为此,提出了一种利用电感矩阵作为中间桥梁的新型磁场-电路耦合法。首先分析了集成滤波电感变压器的绕组结构;然后以求解数学模型的方式,分析了新型磁场-电路耦合法的实际数学计算过程,并列写多种工况下的变压器端口条件;最后以容量为300 k VA的舰船用集成滤波电感整流变压器及滤波系统为例,开展了仿真研究。通过对实际系统的运行测试发现,所有参数的仿真误差均在7.5%以内,所提出的方法能准确地模拟集成滤波电感变压器的实际运行状态,且耗时短、计算精度高。结果表明基于新型磁场-电路耦合法的集成滤波电感变压器及滤波系统仿真建模方法具有良好的工程应用与推广价值。展开更多
文摘Recent advancements in additive manufacturing(AM)have revolutionized the design and production of complex engineering microstructures.Despite these advancements,their mathematical modeling and computational analysis remain significant challenges.This research aims to develop an effective computational method for analyzing the free vibration of functionally graded(FG)microplates under high temperatures while resting on a Pasternak foundation(PF).This formulation leverages a new thirdorder shear deformation theory(new TSDT)for improved accuracy without requiring shear correction factors.Additionally,the modified couple stress theory(MCST)is incorporated to account for sizedependent effects in microplates.The PF is characterized by two parameters including spring stiffness(k_(w))and shear layer stiffness(k_(s)).To validate the proposed method,the results obtained are compared with those of the existing literature.Furthermore,numerical examples explore the influence of various factors on the high-temperature free vibration of FG microplates.These factors include the length scale parameter(l),geometric dimensions,material properties,and the presence of the elastic foundation.The findings significantly enhance our comprehension of the free vibration of FG microplates in high thermal environments.In addition,the findings significantly enhance our comprehension of the free vibration of FG microplates in high thermal environments.In addition,the results of this research will have great potential in military and defense applications such as components of submarines,fighter aircraft,and missiles.
文摘在电路建模方面,集成滤波电感变压器缺少能完善其表达电量特性的器件,且其建模方式复杂、计算步骤和计算时间冗长。为此,提出了一种利用电感矩阵作为中间桥梁的新型磁场-电路耦合法。首先分析了集成滤波电感变压器的绕组结构;然后以求解数学模型的方式,分析了新型磁场-电路耦合法的实际数学计算过程,并列写多种工况下的变压器端口条件;最后以容量为300 k VA的舰船用集成滤波电感整流变压器及滤波系统为例,开展了仿真研究。通过对实际系统的运行测试发现,所有参数的仿真误差均在7.5%以内,所提出的方法能准确地模拟集成滤波电感变压器的实际运行状态,且耗时短、计算精度高。结果表明基于新型磁场-电路耦合法的集成滤波电感变压器及滤波系统仿真建模方法具有良好的工程应用与推广价值。
