Modeling technology has been introduced into software testing field. However, how to carry through the testing modeling effectively is still a difficulty. Based on combination of simulation modeling technology and emb...Modeling technology has been introduced into software testing field. However, how to carry through the testing modeling effectively is still a difficulty. Based on combination of simulation modeling technology and embedded real-time software testing method, the process of simulation testing modeling is studied first. And then, the supporting environment of simulation testing modeling is put forward. Furthermore, an approach of embedded real-time software simulation testing modeling including modeling of cross-linked equipments of system under testing (SUT), test case, testing scheduling, and testing system service is brought forward. Finally, the formalized description and execution system of testing models are given, with which we can realize real-time, closed loop, mad automated system testing for embedded real-time software.展开更多
提出一种利用复合材料插接中空锥形杆段连接而成的输电杆塔,应用于66 k V的电压等级。杆塔主承力梁由杆段插接而成,依据电力设计规范,设计了杆塔的结构形式,给出了变截面杆塔受点载荷下挠度的计算公式,利用层合理论分析了杆段复合材料...提出一种利用复合材料插接中空锥形杆段连接而成的输电杆塔,应用于66 k V的电压等级。杆塔主承力梁由杆段插接而成,依据电力设计规范,设计了杆塔的结构形式,给出了变截面杆塔受点载荷下挠度的计算公式,利用层合理论分析了杆段复合材料的铺层角度、铺层厚度与杆段刚度之间的关系。采用有限元软件计算出杆段间插接长度对主梁弯曲性能的影响,通过小角度纤维缠绕工艺成型各插接杆段。开展杆塔安装导线、断线、风载等各工况真型试验。试验结果表明,插接形式的复合材料杆塔具有良好的抗弯性能和耐疲劳性能,可满足输电杆塔的使用要求。展开更多
研制了一种新型板式无砟轨道TKT-S(Tie Ke Track-Slab),轨道板采用工厂预制普通混凝土结构;板下为纵向条状聚氨酯支撑层,通过调整聚氨酯层的相关力学指标达到减振目的。在大量分析计算和试验的基础上,确定各部件的构造尺寸与聚氨酯的相...研制了一种新型板式无砟轨道TKT-S(Tie Ke Track-Slab),轨道板采用工厂预制普通混凝土结构;板下为纵向条状聚氨酯支撑层,通过调整聚氨酯层的相关力学指标达到减振目的。在大量分析计算和试验的基础上,确定各部件的构造尺寸与聚氨酯的相关配方等。对减振型和非减振型轨道分别进行了自振频率、模态和谐响应分析,以掌握轨道动力性能。为检验轨道系统的减振性能,在室内分别建立了减振和非减振轨道的实尺模型,开展落锤冲击试验;在中国国家铁道试验中心建立50 m试验段,进行行车试验;同时,对落锤冲击和行车试验进行了仿真计算。计算与试验结果吻合,表明TKT-S具有良好的减振性能。展开更多
文摘Modeling technology has been introduced into software testing field. However, how to carry through the testing modeling effectively is still a difficulty. Based on combination of simulation modeling technology and embedded real-time software testing method, the process of simulation testing modeling is studied first. And then, the supporting environment of simulation testing modeling is put forward. Furthermore, an approach of embedded real-time software simulation testing modeling including modeling of cross-linked equipments of system under testing (SUT), test case, testing scheduling, and testing system service is brought forward. Finally, the formalized description and execution system of testing models are given, with which we can realize real-time, closed loop, mad automated system testing for embedded real-time software.
文摘提出一种利用复合材料插接中空锥形杆段连接而成的输电杆塔,应用于66 k V的电压等级。杆塔主承力梁由杆段插接而成,依据电力设计规范,设计了杆塔的结构形式,给出了变截面杆塔受点载荷下挠度的计算公式,利用层合理论分析了杆段复合材料的铺层角度、铺层厚度与杆段刚度之间的关系。采用有限元软件计算出杆段间插接长度对主梁弯曲性能的影响,通过小角度纤维缠绕工艺成型各插接杆段。开展杆塔安装导线、断线、风载等各工况真型试验。试验结果表明,插接形式的复合材料杆塔具有良好的抗弯性能和耐疲劳性能,可满足输电杆塔的使用要求。
文摘研制了一种新型板式无砟轨道TKT-S(Tie Ke Track-Slab),轨道板采用工厂预制普通混凝土结构;板下为纵向条状聚氨酯支撑层,通过调整聚氨酯层的相关力学指标达到减振目的。在大量分析计算和试验的基础上,确定各部件的构造尺寸与聚氨酯的相关配方等。对减振型和非减振型轨道分别进行了自振频率、模态和谐响应分析,以掌握轨道动力性能。为检验轨道系统的减振性能,在室内分别建立了减振和非减振轨道的实尺模型,开展落锤冲击试验;在中国国家铁道试验中心建立50 m试验段,进行行车试验;同时,对落锤冲击和行车试验进行了仿真计算。计算与试验结果吻合,表明TKT-S具有良好的减振性能。