基于ObjectARX的AutoCAD二次开发及应用实例

分析了ObjectARX应用程序编写的基本过程和编写要点,然后以一个六角螺母的开发实例说明ObjectARX开发技术的实际应用.进一步验证了利用ObjectARX对AutoCAD进行二次开发高效、实用、独立性强、可参数化的优点.     

Study on characteristics of pipeline transportation and sulfur fixing of cleaned coal logs

As special cylindrical briquettes of coal for long distance pipeline transportation and directly cleaned combustion the cleaned coal logs should possess two characteristics of transportation in pipeline and cleaned combustion. In order to make cleaned coal logs a rational technology for manufacturing, cleaned coal logs was designed and compound sulfur fixing binders with high effects of binding and sulfur-fixing was selected and combined. In addition, by means of characteristic experiments of strength, wear, waterproof and sulfur-fixing five different cleaned coal logs made with different compound sulfur fixing binders in different compaction conditions was tested and measured. Experimental results indicated that the manufacturing technology of cleaned coal logs was reasonable and the combination of compound sulfur fixing binders was scientific. Cleaned coal logs made up with the fourth group of coal mixture had high strength, good waterproof property, efficient sulfur-fixing, good characteristic of transportation, and achieved the performance requirement for pipeline transportation and sulfur fixing.     

基于ARAMIS的铝合金拉伸过程声发射特性分析

对5052铝合金板材进行了单向拉伸试验,利用ARAMIS应变测量系统获得了铝合金材料在拉伸过程中的应变场,并同时用声发射检测仪检测了铝合金拉伸过程中的声发射信号。通过分析试件拉伸过程中各个阶段声发射特征信号,对比同时刻ARAMIS所得的应变云图,结合金属学原理,分析了5052铝合金在拉伸过程中各个阶段声发射信号产生的机制。结果表明:ARAMIS应变测量系统和声发射检测仪均能较好地测得5052铝合金在拉伸过程的变形破坏特征,利用ARAMIS应变测量系统测得试件表面吕德斯带的变化规律可以进一步解释试件在拉伸过程中声发射信号产生原因。     

榕江关埠引水工程取水口设置方案分析

取水可靠性是影响引水工程正常运行的主要因素,取水口设置合理是确保取水可靠的前提。以榕江关埠引水工程取水口为研究对象,基于MIK21建立水动力学模型,从可取水量、取水对近场流速分布影响论证,同时针对榕江取水条件利用水质监测成果咸潮标定物变化特征比选拟定的3个河段取水口,推荐取水口设置最优方案。研究结果对于榕江关埠引水工程建设具有指导意义。     

ARAMIS应变测量系统在铝合金材料拉伸试验中的应用

对5052铝合金板材进行了单向拉伸试验,利用ARAMIS三维光学变形和应变测量分析系统获得了铝合金材料在拉伸过程中的应变场。试验结果表明,利用ARAMIS系统可以动态、准确地测量铝合金板材在拉伸过程中的应变,获得应变云图;通过拉伸过程中各阶段的应变分布云图和不同位置处的应变变化曲线,结合金属学原理,可以深入了解金属拉伸过程屈服阶段吕德斯带的形成以及变化情况,并测量得到铝合金材料发生颈缩失稳现象时的应变集中带,有助于深入了解铝合金材料变形破坏机制。