http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Pueh (검색결과 4 건)
- 무료
- 기관 내 무료
- 유료
-
Shock analysis of a new ultrasonic motor subjected to half-sine acceleration pulses
Hou, Xiaoyan,Lee, Heow Pueh,Ong, Chong Jin,Lim, Siak Piang Techno-Press 2016 Advances in computational design Vol.1 No.4
This paper aims to examine the dynamic response of a newly designed ultrasonic motor under half-sine shock impulses. Impact shock was applied to the motor along x, y or z axis respectively with different pulse widths to check the sensitivity of the motor to the shocks in different directions. Finite Element Analysis (FEA) with the ANSYS software was conducted to obtain the relative displacement of a key point of the motor. Numerical results show that the maximum relative displacement is of micro meter level and the maximum stress is five orders smaller than the Young's modulus of the piezo material, which proves the robustness of the motor.
-
Andi Haris,Heow Pueh Lee 한국섬유공학회 2022 Fibers and polymers Vol.23 No.11
In this study, an impedance tube test was conducted to investigate low frequency sound transmission loss (STL) ofa sandwich panel with milli-perforated honeycomb core. Three different configurations of perforated honeycomb cores with3 mm diameter orifices are explored: (1) a global spiral, (2) four orifices per cell, and (3) six orifices per cell. It is found thatthe 3D-printed PLA honeycomb sandwich panel shows STL values from 34 dB to 59 dB within the frequency range of 100-1600 Hz. The spiral configuration outperforms the unmodified sandwich whereas the four and six orifice configurationsexhibit higher STL than the spiral for frequencies between 650 Hz and 900 Hz. Moreover, the in-plane and out-of-planecompression tests were performed to determine the effect of having milli-orifices on the mechanical properties of thehoneycomb core. It is concluded that the milli-perforated honeycomb core has the potential to produce a lightermultifunctional honeycomb sandwich panel with enhanced low frequency STL without a significant degradation in in-planecompression properties.
-
Xin Liao,Lin Chengqi,Heow Pueh Lee,Renqiang Jiao 대한기계학회 2023 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.37 No.12
To suppress the vibration of the suspended cab of construction machinery, a novel passive hydraulically damped rubber mount (PHDRM) with multi-inertial tracks is designed. The two suspension system models describing single and multi-inertial tracks are proposed in different coupled relations based on the parallel combination model of rubber and fluid, considering fluid rheological behavior and compressibility. The low-frequency dynamic behaviors of the PHDRM and rubber isolator with corresponding structures under fixedfrequency and frequency-sweep excitations are investigated analytically and experimentally. It is demonstrated that the dynamic stiffness of PHDRM exhibits softening characteristics, as well as amplitude and frequency dependence, which are caused by the viscoelastic behavior of hydraulic oil and fluid-solid coupling. And the damping has a more significant amplitude and frequency dependence. The results also illustrate that PHDRM exhibits more excellent dynamic performance in suppressing vibration and resonance compared to the traditional rubber isolator. The effectiveness of the mathematical model is verified by comparing the simulation and experimental results. Further, the dynamic performances of the PHDRM with different lengths, cross sections, and numbers of inertial tracks are studied by using measured forcedisplacement loops and transmissibility, and their vibration isolation performances were compared. Experimental results show that the PHDRM with three inertial tracks has significant advantages in energy dissipation, resulting in better predictions in reducing transmissibility. The studies in this paper provide an important theoretical basis and reference value for the structural optimization design of the hydraulically damped rubber mount.
-
Numerical evaluation of buried composite and steel pipe structures under the effects of gravity
William Toh,Long Bin Tan,Kwong Ming Tse,Karthikayen Raju,Heow Pueh Lee,Beng Chye Tan 국제구조공학회 2018 Steel and Composite Structures, An International J Vol.26 No.1
In this paper, the response of an underground fibreglass reinforced plastic (FRP) composite pipe system subjected to realistic loading scenarios that may be experienced by an actual buried pipeline is investigated. The model replicates an arbitrary site with a length of buried pipeline, passing through a 90° bend and into a valve pit. Various loading conditions, which include effects of pipe pressurization, differences in response between stainless steel and fibreglass composite pipes and severe loss of bed-soil support are studied. In addition to pipe response, the resulting soil stresses and ground settlement are also analysed. Furthermore, the locations of potential leakage and burst have also been identified by evaluating the contact pressures at the joints and by comparing stresses to the pipe hoop and axial failure strengths.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
