Design of compliant revolute joints based on mechanism stiffness matrix through topology optimization using a parameterization level set method

Li, Li; Zhu, Xiaojin

doi:10.1007/s00158-019-02278-8

Cited by 13 publications

(7 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The compliant revolute joint consists of a thin cylinder of compliant material with a inner hollow where its external face is fixed and its internal face is subject to a rotational displacement produced by a tangential force applied at the same face. Li et al [222][223][224] presented a series of works dealing with the Topology Optimization of this type of flexure joint. In [222], the authors designed new compliant revolute joints reconstructed after removing material with a Topology Optimization process.…”

Section: Topology Optimization In Compliant Systems As Flexure Elementsmentioning

confidence: 99%

“…Further experimental validation in the rotational angle and stress levels of the optimal designs was performed in [223], obtaining a maximum error between experimental and FEA results of 8.7%. This was expanded in [224], by modeling the compliant revolute joint as a kinetoelastic model considering the kinematic properties and structural elastic properties simultaneously. This approach allowed obtaining optimized compliant revolute joints with desirable compliance properties that are quite similar to those obtained in their previous works.…”

Section: Topology Optimization In Compliant Systems As Flexure Elementsmentioning

confidence: 99%

See 1 more Smart Citation

A Review on Tailoring Stiffness in Compliant Systems, via Removing Material: Cellular Materials and Topology Optimization

2021

View full text Add to dashboard Cite

Cellular Materials and Topology Optimization use a structured distribution of material to achieve specific mechanical properties. The controlled distribution of material often leads to several advantages including the customization of the resulting mechanical properties; this can be achieved following these two approaches. In this work, a review of these two as approaches used with compliance purposes applied at flexure level is presented. The related literature is assessed with the aim of clarifying how they can be used in tailoring stiffness of flexure elements. Basic concepts needed to understand the fundamental process of each approach are presented. Further, tailoring stiffness is described as an evolutionary process used in compliance applications. Additionally, works that used these approaches to tailor stiffness of flexure elements are described and categorized. Finally, concluding remarks and recommendations to further extend the study of these two approaches in tailoring the stiffness of flexure elements are discussed.

show abstract

Section: Topology Optimization In Compliant Systems As Flexure Elementsmentioning

confidence: 99%

Section: Topology Optimization In Compliant Systems As Flexure Elementsmentioning

confidence: 99%

A Review on Tailoring Stiffness in Compliant Systems, via Removing Material: Cellular Materials and Topology Optimization

2021

View full text Add to dashboard Cite

show abstract

“…Chen et al [10] studied the topology optimization of joints under single-and multiple-load conditions and obtained models for the spatial-structure joints in additive manufacturing by averaging different load conditions. Further, Li et al [11] analyzed the topology optimization of joints to maximize stiffness and minimize mass, respectively. Ye et al [12] performed topology optimization of single-layer spatial grid structure joints under complex load conditions and solved the singularity of the stress matrix by applying the velocity field, which verified the advantages of the optimization design method for rigid joints by combining topology optimization with structural design.…”

Section: Introductionmentioning

confidence: 99%

Multiobjective Topology Optimization of Spatial‐Structure Joints

Zhu

Liu

2021

Advances in Civil Engineering

View full text Add to dashboard Cite

To realize the static and dynamic multiobjective topology optimization of joints in spatial structures, structural topology optimization is carried out to maximize the stiffness under static multiload conditions and maximize the first third-order dynamic natural frequencies. According to the single-objective optimization results, the objective function of the multiobjective topology optimization of joints is established by using the compromise programming method, and the weight coefficient of each static load condition is determined by using the analytic hierarchy process. Subsequently, under the constraint of the volume fraction, the multiobjective topology optimization of joints is realized by minimizing the multiobjective function. Finally, the optimized structure is smoothed to obtain a smoother joint, and its mechanical properties are compared with those of the hollow ball joint. The results indicate that the multiobjective topology optimization that considers the static stiffness and dynamic frequency can effectively improve the mechanical properties of the structure. Through the research on multiobjective topology optimization, a new type of spatial joint with reasonable stress, a novel form, and aesthetic shape can be obtained, which mitigates the shortcomings of single-objective topology optimization. In comparison to hollow spherical joints with the same weight, topology-optimized joints have a superior ability to resist deformation and improve low-order frequency, which verifies the feasibility of applying multiobjective topology optimization to the lightweight design of joints.

show abstract

“…In order to improve dynamic characteristics, various approaches are presented to study the clearance joint. And the contact force model [29][30][31][32][33] and the friction model [34][35][36] are mainly used in the current research on clearance joint. Chen et al [37] and Guo et al [38] respectively analyzed the dynamic characteristics through the dynamic model of machine with clearance joint, but the presented model is just a simple linkage mechanism.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Dynamic Characteristics Analysis of Shift Manipulator for Robot Driver with Multiple Joint Clearance

Chen

2021

Preprint

View full text Add to dashboard Cite

The clearance joint is very important to the nonlinear dynamic characteristics of mechanism. This paper presents a nonlinear dynamic characteristic model of shift manipulator for robot driver based on multiple revolute clearance joints to improve dynamic characteristics. The relative penetration depth and velocity between pin and bushing are obtained by establishing the kinematic model of the shift manipulator with clearance joint. Based on the improved L-N contact force model and the modified Coulomb friction model, the normal contact force and the tangential contact force of clearance joint are analyzed. With full clearance joints, the nonlinear dynamic characteristic model of the shift manipulator for robot driver is established. The nonlinear dynamic characteristic laws of the shift manipulator including the end displacement, velocity, acceleration and active joint driving torque are analyzed by different sizes of clearance joints. And the performance test of the shift manipulator for robot driver is conducted. The results demonstrate that the nonlinear dynamic characteristics are well analyzed and verified through the presented characteristic model with clearance joints.

show abstract

Design of compliant revolute joints based on mechanism stiffness matrix through topology optimization using a parameterization level set method

Cited by 13 publications

References 41 publications

A Review on Tailoring Stiffness in Compliant Systems, via Removing Material: Cellular Materials and Topology Optimization

A Review on Tailoring Stiffness in Compliant Systems, via Removing Material: Cellular Materials and Topology Optimization

Multiobjective Topology Optimization of Spatial‐Structure Joints

Nonlinear Dynamic Characteristics Analysis of Shift Manipulator for Robot Driver with Multiple Joint Clearance

Contact Info

Product

Resources

About