The present paper reviews the vibro-acoustic modelling of extruded aluminium train floor structures including the state-of-the-art of its industrial applications, as well as the most recent developments on mid-frequen...The present paper reviews the vibro-acoustic modelling of extruded aluminium train floor structures including the state-of-the-art of its industrial applications, as well as the most recent developments on mid-frequency mod- elling techniques in general. With the common purpose to predict mid-frequency vibro-acoustic responses of stiffened panel structures to an acceptable accuracy at a reasonable computational cost, relevant techniques are mainly based on one of the following three types of mid-frequency vibro- acoustic modelling principles： （1） enhanced deterministic methods, （2） enhanced statistical methods, and （3） hybrid deterministic/statistical methods. It is shown that, although recent developments have led to a significant step forward in industrial applicability, mature and adequate prediction tech- niques, however, are still very much required for solving sound transmission through, and radiation from, extruded aluminium panels used on high-speed trains. Due to their great potentials for predicting mid-frequency vibro-acoustics of stiffened panel structures, two of recently developed mid-frequency modelling approaches, i.e. the so-called hybrid finite element-statistical energy analysis （FE-SEA） and hybrid wave-based method- statistical energy analysis （WBM-SEA）, are then recapitulated.展开更多
Against the backdrop of the pronounced tension between a growing caseload and limited judicial personnel,the element-based complaint has been regarded as an efficiency-enhancing instrument in the reform of case comple...Against the backdrop of the pronounced tension between a growing caseload and limited judicial personnel,the element-based complaint has been regarded as an efficiency-enhancing instrument in the reform of case complexity diversion and has played a pivotal role in the development of smart courts.Taking courts in Ningxia as the research sample,this study investigates the application status and practical challenges of element-based complaints through questionnaire surveys,judicial interviews,and comparative data analysis.In response to the difficulties encountered during implementation—including challenges faced by litigants in completing the forms,obstacles in lawyers'application,and operational issues within the courts—this paper tentatively proposes a localized improvement scheme integrating"element-based complaints+artificial intelligence."The study seeks to explore a replicable path for optimizing the element-based complaint system in the central and western regions of China.展开更多
基金sponsored by the NationalNatural foundation of China(Grant Nos.U1434201 and 51175300)
文摘The present paper reviews the vibro-acoustic modelling of extruded aluminium train floor structures including the state-of-the-art of its industrial applications, as well as the most recent developments on mid-frequency mod- elling techniques in general. With the common purpose to predict mid-frequency vibro-acoustic responses of stiffened panel structures to an acceptable accuracy at a reasonable computational cost, relevant techniques are mainly based on one of the following three types of mid-frequency vibro- acoustic modelling principles： （1） enhanced deterministic methods, （2） enhanced statistical methods, and （3） hybrid deterministic/statistical methods. It is shown that, although recent developments have led to a significant step forward in industrial applicability, mature and adequate prediction tech- niques, however, are still very much required for solving sound transmission through, and radiation from, extruded aluminium panels used on high-speed trains. Due to their great potentials for predicting mid-frequency vibro-acoustics of stiffened panel structures, two of recently developed mid-frequency modelling approaches, i.e. the so-called hybrid finite element-statistical energy analysis （FE-SEA） and hybrid wave-based method- statistical energy analysis （WBM-SEA）, are then recapitulated.
基金National College Student Innovation and Entrepreneurship Training Program of Ningxia University,"A Study on the Digital Path for Safeguarding Litigants'Procedural Rights under the Background of Element-Based Application"(Project No.G202510749010)。
文摘Against the backdrop of the pronounced tension between a growing caseload and limited judicial personnel,the element-based complaint has been regarded as an efficiency-enhancing instrument in the reform of case complexity diversion and has played a pivotal role in the development of smart courts.Taking courts in Ningxia as the research sample,this study investigates the application status and practical challenges of element-based complaints through questionnaire surveys,judicial interviews,and comparative data analysis.In response to the difficulties encountered during implementation—including challenges faced by litigants in completing the forms,obstacles in lawyers'application,and operational issues within the courts—this paper tentatively proposes a localized improvement scheme integrating"element-based complaints+artificial intelligence."The study seeks to explore a replicable path for optimizing the element-based complaint system in the central and western regions of China.
