捏合块元件混合含能材料的安全性分析
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摘要
含能材料在当今军民发展中发挥着重要的作用,含能材料的研究和应用,关系着国家的安全与社会的发展。为了研究同向双螺杆中捏合块元件混合含能材料的安全性,建立了不同错列角和不同捏合盘厚度捏合块元件流道的几何模型,应用Mesh对模型进行了网格划分,并采用Polyflow模拟软件对流场中的混合过程进行了三维非等温模拟。对比研究了不同捏合块元件在混合过程中的温度场、压力场和剪切应力场,分析了其在混合过程中的安全性。结果表明,在不同错列角的捏合块元件中,错列角为60°和90°的元件具有较好的安全性;在不同捏合盘厚度的元件中,捏合盘厚度越小,安全性越好。
Energetic materials played an important role in military and civilian development. The research and application of energetic materials were related to the safety and social development of the country. In order to study the safety of kneading block elements in co-rotating twin screw mixer mixed energetic materials,the geometric model of flow channel for kneading block element with different stagger angle and kneading disc thickness were established. The model was meshed by Mesh,and the three-dimensional non-isothermal simulation of the mixing process in the flow channel were carried out by Polyflow simulation software. The temperature field,pressure field and shear stress field of different kneading blocks in mixing process were compared,and the safety was analyzed. The results showed that the elements with the stagger angle of 60° and 90° had the better safety within the kneading block elements with different stagger angles. The thinner the kneading disc was,the better safety performance was.
Energetic materials played an important role in military and civilian development. The research and application of energetic materials were related to the safety and social development of the country. In order to study the safety of kneading block elements in co-rotating twin screw mixer mixed energetic materials,the geometric model of flow channel for kneading block element with different stagger angle and kneading disc thickness were established. The model was meshed by Mesh,and the three-dimensional non-isothermal simulation of the mixing process in the flow channel were carried out by Polyflow simulation software. The temperature field,pressure field and shear stress field of different kneading blocks in mixing process were compared,and the safety was analyzed. The results showed that the elements with the stagger angle of 60° and 90° had the better safety within the kneading block elements with different stagger angles. The thinner the kneading disc was,the better safety performance was.
引文
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[2] BADGUJAR D M,TALAWAR M B,ASTHANA S N,et al. Advances in science and technology of modern energetic materials:an overview[J]. Journal of Hazardous Materials,2008,151(2/3):289-305.
[3]王昕.绿色火炸药及相关技术的发展与应用[J].火炸药学报,2006,29(5):67-71.
[4]赵瑛.绿色含能材料的研究进展[J].化学推进剂与高分子材料,2010,8(6):1-5.
[5]雷宁,闫大庆.国外复合固体推进剂连续混合装药工艺的研发及应用前景[J].飞航导弹,2015(9):90-94.
[6] DOMBE G,MEHILAL,BHONGALE C,et al. Application of twin screw extrusion for continuous processing of energetic materials[J].Central European Journal of Energetic Materials,2015,12(3):507-522.
[7] KOWALCZYK J E,MAILK M,KALYON D M,et al. Safety in design and manufacturing of extruders used for the continuous processing of energetic formulations[J]. Journal of Energetic Materials,2007,25(4):247-271.
[8]霍朝沛.双螺杆混合含铝炸药模拟物数值模拟及均匀性研究[D].北京:北京化工大学,2015.
[9]聂成磊.经典炸药模拟物流变特性及双螺杆混合研究[D].北京:北京化工大学,2014.
[10]董中华,江波,郭建.同向双螺杆挤出机中不同导程螺纹元件的流动和混合模拟[J].橡塑技术与装备,2005,31(7):1-5.
[11] ISHIKAWA T,AMANO T,KIHARA S,et al. Flow patterns and mixing mechanisms in the screw mixing element of a co-rotating twinscrew extruder[J]. Polymer Engineering and Science,2002,42(5):925-939.
[12]周克.单螺杆螺压过程推进剂流变参数及物料混合特性的数值模拟研究[D].南京:南京理工大学,2015.
[13]钟婷婷.双基推进剂螺压挤出成型工艺流变特性的数值模拟研究[D].南京:南京理工大学,2015.