Analysis of frequency characteristics and sensitivity of compliant mechanisms

Liu, Shanzeng; Dai, Jian S.; Li, Aimin; Sun, Zhaopeng; Feng, Shizhe; Cao, Guohua

doi:10.3901/cjme.2015.1215.148

Cited by 16 publications

(7 citation statements)

References 14 publications

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“…The above simulation and experiment results have demonstrated that the developed model for the lapping loading force provides appropriate precision. The 2R PRBM model of the three-part guide post structure in this study has nearly the same level of accuracy as the classical model, such as the 6R PRBM for the fixed-guide compliant model, 28 but the overall computation time and modeling difficulty have been considerably decreased. Therefore, it is important to choose the right number of joints while creating the PRBM.…”

Section: Experiments and Simulation Verificationmentioning

confidence: 80%

“…Furthermore, Yu and Zhu 27 proposed a 5R pseudo-rigid-body model and its minimum errors of member tip locus are 0.11% under six deformation conditions. Liu et al 28 presented a new fixed-guided 6R pseudo-rigid-body model to improve the calculation accuracy of the fixed-guided compliant link, and the errors of the tip locus are almost zero compared with the result by the elliptic integral solution. However, the calculation time and resources are increasing with the growth of the number of joints contained in the pseudo-rigid-body model.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The design and analysis of a novel lapping loading device using a compliant mechanism

Geng,

He,

Chen

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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A lapping loading device that makes use of a compliant mechanism for a novel ring-type tapered roller lapping method is proposed in this paper. A three-part guide post structure is designed using the new type of tapered roller processing principle. For the purpose of designing and analyzing of the three-part guide post structure, a pseudo-rigid-body model for the mechanism of the three-part guide post is developed. Based on the pseudo-rigid-body model, the loading mechanisms and the mechanical behavior of the three-part guide post structure were discussed in this work simultaneously. The computation model of the lapping force in the machining of the tapered roller lapping was developed and validated through the finite element method and experiment results. This shows that the developed computation model possess high enough accuracy to effectively control the lapping loading force. This research established the viability of using the compliant mechanism in the field of the tapered roller processing technique.

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Section: Experiments and Simulation Verificationmentioning

confidence: 80%

Section: Introductionmentioning

confidence: 99%

The design and analysis of a novel lapping loading device using a compliant mechanism

Geng,

He,

Chen

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

show abstract

“…Sensitivity analysis is the method to study the influence of this parameter change on the sensitivity of the system response change [30]. Sensitivity analysis can also help to determine which parameters have a greater impact on the output responses and to provide guidance for structural performance optimization [31]. Therefore, sensitivity analysis has been widely used in many fields such as marketing, economic management, project proposal evaluation, and engineering optimization design.…”

Section: Optimization Design For Avoiding Aero-engine Vibration Frequ...mentioning

confidence: 99%

Experimental Investigation and Optimization Design of Multi-Support Pipeline System

Zhang

Liu

Zhang

et al. 2021

Chin. J. Mech. Eng.

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The design of aircraft hydraulic pipeline system is limited by many factors, such as the integrity of aviation structure or narrow installation space, so the limited clamp support position should be considered. This paper studied the frequency adjustment and dynamic responses reduction of the multi-support pipeline system through experiment and numerical simulation. To avoid the resonance of pipeline system, we proposed two different optimization programs, one was to avoid aero-engine working range, and another was to avoid aircraft hydraulic pump pulsation range. An optimization method was introduced in this paper to obtain the optimal clamp position. The experiments were introduced to validate the optimization results, and the theoretical optimization results can agree well with the test. With regard to avoiding the aero-engine vibration frequency, the test results revealed that the first natural frequency was far from the aero-engine vibration frequency. And the dynamic frequency sweep results showed that no resonance occurred on the pipeline in the engine vibration frequency range after optimization. Additionally, with regard to avoiding the pump vibration frequency, the test results revealed that natural frequencies have been adjusted and far from the pump vibration frequency. And the dynamic frequency sweep results showed that pipeline under optimal clamp position cannot lead to resonance. The sensitivity analysis results revealed the changing relationships between different clamp position and natural frequency. This study can provide helpful guidance on the analysis and design of practical aircraft pipeline.

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“…At present, some methods can be used to calculating the sensitivity as Nelson method, Modal method, matrix perturbation method, a differential method [18]. In this study, the direct differential method is chosen to use.…”

Section: Evaluation Of Displacement Sensitivity Of a Compliant Microgrippermentioning

confidence: 99%

Design and analysis of a displacement sensor-integrated compliant microgripper based on parallel structure

Ho¹,

Dang

Dao

2020

Vietnam J. Mech.

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This study evaluates the displacement sensitivity of a new compliant microgripper. The microgripper is designed based on a four-bar mechanism and the concept of a compliant mechanism. The effects of the width of the right circular hinge, the thickness of microgripper, and the material properties on the dis-placement sensitivity are considered via using the finite element method. In the beginning, the stress and deformation of the compliant microgripper are evaluated. Subsequently, the displacement of the microgripper is then analyzed. The results showed that the design parameter and the displacement sensitivity have a close relationship. To increase the grasping reliability and measure the displacement or force, a micro-displacement sensor is integrated with the proposed microgripper. Finally, the modeling and analysis of the proposed sensor are conducted.

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Analysis of frequency characteristics and sensitivity of compliant mechanisms

Cited by 16 publications

References 14 publications

The design and analysis of a novel lapping loading device using a compliant mechanism

The design and analysis of a novel lapping loading device using a compliant mechanism

Experimental Investigation and Optimization Design of Multi-Support Pipeline System

Design and analysis of a displacement sensor-integrated compliant microgripper based on parallel structure

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