4篇
您的检索式：作者名="Naichao Wu"
|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Customized reconstructive prosthesis design based on topological optimization to treat severe proximal tibia defect显示文摘A novel reconstructive prosthesis was designed with topological optimization(TO)and a lattice structure to enhance biomechanical and biological properties in the proximal tibia.The biomechanical performance was validated through finite element analysis(FEA)and biomechanical tests.The tibia with inhomogeneous material properties was reconstructed according to computed tomography images,and different components were designed to simulate the operation.Minimum compliance TO subject to a volume fraction constraint combined with a graded lattice structure was utilized to redesign the prosthesis.FEA was performed to evaluate the mechanical performances of the tibia and implants after optimization,including stress,micromotion,and strain energy.The results were analyzed by paired-samples t tests,and p<0.05 was considered significant.Biomechanical testing was used to verify the tibial stresses.Compared to the original group(OG),the TO group(TOG)exhibited lower stress on the stem,and the maximum von Mises stresses were 87.2 and 53.1 MPa,respectively,a 39.1%reduction(p<0.05).Conversely,the stress and strain energy on the tibia increased in the TOG.The maximum von Mises stress values were 16.4 MPa in the OG and 22.9 MPa in the TOG with a 39.6%increase(p<0.05),and the maximum SED value was 0.026 MPa in the OG and 0.042 MPa in the TOG,corresponding to an increase of 61.5%(p<0.05).The maximum micromotions in the distal end of the stem were 135μm in the OG and 68μm in the TOG,almost a 50%reduction.The stress curves of the biomechanical test coincided well with the FEA results.The TO approach can effectively reduce the whole weight of the prosthesis and improve the biomechanical environment of the tibia.It could also pave the way for next-generation applications in orthopedics surgery. | Aobo Zhang Hao Chen Yang Liu Naichao Wu Bingpeng Chen Xue Zhao Qing Han Jincheng Wang | 2021 | Bio-Design and Manufacturing2021，4，1： | 4 |
| 2 | Efects of diferent casting mould cooling rates on microstructure and properties of sand-cast Al-7.5Si-4Cu alloy显示文摘In this work, Al-7.5Si-4Cu alloy melt modified by Al-10Sr, RE and Al-5Ti-B master alloys was poured into multi-step moulds made from three moulding sands, including quartz, alumina and chromite, to investigate comparatively the effects of different cooling rates of the casting mould on the alloy's microstructures and mechanical properties. The results show that with an increase in wall thickness, the cooling rate decreases, the dendrite arm spacing(DAS) increases significantly and the mechanical properties decrease steadily. The elongation is more sensitive to the cooling rate than the tensile strength. No obvious trend of the effect of wall thickness on hardness of the alloy was found. When the cooling rate is at its greatest, the microstructures and mechanical properties are the best when using chromite sand. The improvement of the properties is mainly attributed to the decrease of the DAS, the grain refinement and the metamorphic effect. Each of the three has a strong impact on the microstructures. Furthermore, a series of fitting models was established based on the data of the DAS to predict the mechanical properties of the multivariate sand-cast Al-7.5Si-4Cu alloy, | Liu Guanglei Si Naichao Sun Shaochun Wu Qinfang | 2013 | China Foundry2013，10，6： | 1 |
| 3 | Contact reactive bra zing of A1 alloy/Cu/stainless steel joints and dissolution be haviors of interlayer显示文摘 | Wu Mingfang Si Naichao Chen Jian | 2011 | Trans Nonferrous Metals Soc Chi na2011，21，： | 1 |
| 4 | Study of interdisciplinary specialized mechanical engineering education 显示文摘 | Ping He Naichao Chen Jiang Wu | 2011 | Advanced Materials Research2011，，199200： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员