【标题】Design and analysis of 3D metal printed SS17-4PH connecting rod
【参考中译】3D金属印刷SS 17 -4PH连接杆设计与分析
【类型】 期刊
【关键词】 Additive manufacturing (AM); 3D printing; Connecting rod (CR); Modelling; Finite element analysis (FEA); Selective laser melting (SLM)
【参考中译】 增材制造（AM）; 3D打印;连接杆（CR）;建模;有限元素分析（FEA）;选择性激光熔化（SPL）
【作者】 Vinod Kumar; B. S. Pabla; S. C. Vettivel
【摘要】 The utilization of 3D printing metals has gained considerable traction as a manufacturing technique within the automotive and aerospace sectors, leading to a demand for more efficient and cost-effective methods. In this article, the connecting rod (CR) of the two-wheeler's four-stroke engine underwent a redesign, analysis, and printing process using SS17-4PH gas atomized stainless steel powder through selective laser melting (SLM). The redesign aimed to reduce weight while maintaining strength in SolidWorks. Ansys 18.1 was used to perform finite element analysis (FEA). A comparison was made between the overall deformation, elastic strain, Von-Mises stress, safety factor, life, damage, and weight reduction of the optimized CRs and the original CR. The analysis was conducted under a load of 616 N, which is double the actual load on the CR. Subsequently, the optimized CR was printed using SLM. The study revealed that the weight of the optimized CR is significantly lower than that of the original. Furthermore, the modified CR is expected to have a similar lifespan to the original CR.
【参考中译】 3D打印金属的使用在汽车和航空航天领域作为一种制造技术已经获得了相当大的吸引力，导致对更高效和更具成本效益的方法的需求。本文以两轮S四冲程发动机连杆为研究对象，采用SS17-4PH气体雾化不锈钢粉末进行选择性激光熔凝，对连杆进行了重新设计、分析和印刷。重新设计的目的是减轻重量，同时保持SolidWorks的强度。用ANSYS18.1软件进行有限元分析。对优化后的CRS与原CRS的整体变形、弹性应变、Von-Mise应力、安全系数、寿命、损伤和重量减轻进行了比较。分析是在616N的载荷下进行的，这是CR上实际载荷的两倍。随后，使用SLM打印优化的CR。研究表明，优化后的CR重量明显低于原始CR。此外，修改后的CR预计将具有与原始CR相似的寿命。
【来源】 IJIDeM 2024, vol.18, no.5
【入库时间】 2025/1/24
【标题】MANUFACTURING A CONSOLIDATED COPPER-STAINLESS STEEL BIMETALLIC PRODUCT USING xBeam 3D METAL PRINTING
【参考中译】使用xBeam 3D金属打印打印凝固的铜-不锈钢双金属产品
【关键词】 Copper; Stainless steel; Joining; Bimetals; Additive manufacturing; Metal 3D printing; Electron beam; DED-wire
【参考中译】 铜;不锈钢;连接;双金属;增材制造;金属3D打印;电子束; DED线
【作者】 D. Kovalchuk; L. Tretiakov; P. R. Carriere; Nanda Gopal Matavalam
【摘要】 The creation of strong and tight copper and stainless steel joints in mechanical structures and components is an actual challenge in modern engineering. Thanks to unique combination of different properties such joints have many important applications like components of linear particle accelerators, ultra-high vacuum systems (up to 10~(-8) torr), heat exchangers, even of the international fusion experimental reactor. At the same time, ensuring a reliable joint of immiscible materials such as copper and stainless steel is a technologically challenging problem due to significantly different physical, mechanical and metallurgical properties, including melting points, thermal expansion coefficients, thermal conductivity, etc. Traditional approaches to the production of such joints, based on certain welding methods, impose many technical and geometric limitations due to the need for special preparation of the contact surfaces of the parts to be joined or the uncontrolled formation of new phases when mixing melts of different metals. As for brazing methods, they do not always provide reliable vacuum-tight joints for relatively thick parts and do not guarantee sufficient joint strength. Therefore, it is important to find more technologically flexible ways to solve such problems. This article discusses a new approach to joining copper and stainless steel using the xBeam 3D Metal Printing technology. This novel directed energy deposition (DED) technology uses a profile electron beam and coaxial feeding of copper wire to deposit it upon a precision machined stainless steel substrate. The results of the exploration study of joints made using this method are presented, including the study of vacuum tightness of the joint, density of the deposited material, metallurgy of the interface, electrical conductivity, oxygen content, hardness in different zones, etc. Specialized preheating strategies minimized the thermal deformation of the machined substrate, a key consideration for adding multimaterial functionality to monolith components.
【参考中译】 在机械结构和部件中创建坚固而紧密的铜和不锈钢接头是现代工程中的一个实际挑战。由于不同性能的独特组合，这种接头具有许多重要的应用，如直线粒子加速器、超高真空系统(高达10~(-8)Torr)、换热器，甚至国际聚变实验反应堆的部件。与此同时，由于物理、机械和冶金性能(包括熔点、热膨胀系数、导热系数等)的显著不同，确保铜和不锈钢等不相容材料的可靠连接是一个具有技术挑战性的问题。传统的此类接头生产方法基于某些焊接方法，由于需要对要连接的部件的接触面进行特殊准备，或者在混合不同金属熔体时不受控制地形成新相，因此施加了许多技术和几何限制。至于铜焊方法，它们并不总是为相对较厚的零件提供可靠的真空密封连接，也不能保证足够的连接强度。因此，重要的是找到更灵活的技术方法来解决这些问题。本文讨论了一种使用XBeam 3D金属印刷技术连接铜和不锈钢的新方法。这种新的定向能量沉积(DED)技术使用了一束轮廓电子束和铜线的同轴馈送，将其沉积在精密加工的不锈钢衬底上。介绍了用这种方法制作的接头的探索性研究结果，包括接头的真空密封性、沉积材料的密度、界面的冶金性能、电导率、氧含量、不同区域的硬度等。专门的预热策略将加工衬底的热变形降至最低，这是为整体组件添加多材料功能的关键考虑因素。
【来源】 The Paton Welding Journal 2024, no.7
【标题】A novel 3D metal printing in-line bandpass filter with multiple controllable transmission zeros
【参考中译】一种具有多个可控传输零点的新型3D金属印刷串联带通过滤器
【关键词】 3D printing; Asymmetric resonator; Bandpass filter
【参考中译】 3D打印;非对称共振器;带通过滤器
【作者】 Sheng Zhang; Da Ni Li; Jia Yu Rao; Xin Xie; Jun Wei He; Khaled Aliqab
【摘要】 In this paper, a novel three-pole bandpass filter with a pair of controllable transmission zeros (TZs) is proposed first. The proposed structure is based on asymmetric dual-postresonators and two external resonators. The fundamental mode and the first higher mode of the asymmetric dual-postresonators are used as the nonresonant mode and the resonant mode separately. The nonresonant mode generates direct source to load negative coupling, thus providing one TZ located below the passband. The asymmetric dual-postresonators and one of the external resonators R3 form a magnetically coupled cascaded triplet unit to produce the other TZ above the passband. Therefore, these two TZs are independently controlled. Moreover, the filter has a good quality factor (Q_u), of around 2700, compact size and an excellent out-of-band performance. For further suppressing the harmonic response and improving the processing accuracy, a six-pole bandpass filter with harmonic suppression is designed and fabricated by using metal 3D printing technology. The measured result matches well with the simulated one, which verifies the accuracy of the method.
【参考中译】 本文首先提出了一种新型的传输零点可控的三极点带通滤波器。该结构基于非对称双后谐振器和两个外谐振器。非对称双后谐振器的基模和第一高模分别用作非谐振模和谐振模。非谐振模产生直接源至负载负耦合，从而提供位于通带下方的一个TZ。非对称双后谐振器和外部谐振器R3之一形成磁耦合级联三重态单元，以产生通带上方的另一个TZ。因此，这两个TZS是独立控制的。此外，该滤波器具有良好的品质因数(Q_U)，约为2700，尺寸紧凑，带外性能优良。为了进一步抑制谐波响应，提高加工精度，采用金属3D打印技术，设计并制作了一种具有谐波抑制功能的六极带通滤波器。测量结果与仿真结果吻合较好，验证了该方法的准确性。
【来源】 Microwave and Optical Technology Letters 2024, vol.66, no.4