Shear Strengths of Different Bolt Connectors on the Large Span of Aluminium Alloy Honeycomb Sandwich Structure

Zhao, Changsui; Zheng, Weixin; Ma, Jun; Zhao, Yangjian

doi:10.3390/app7050450

Cited by 16 publications

(7 citation statements)

References 32 publications

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“…The terminal portion of the shank and the "threaded" hole on the rotating table have been joined by means of a bonded contact. The analysis has been divided into two steps: at the first step, a preload of Fi = 70 kN has been assigned to each screw: this preload is calculated, based on a tightening torque T = 106 Nm and oiled surfaces, μm = 0.10 [20][21][22][23], as for the company's assembly specification. The displacements retrieved at this step are shown in Figure 12a.…”

Section: Tuning Of the Stiffness Parameter Of The Fe Modelmentioning

confidence: 99%

A Methodology for the Lightweight Design of Modern Transfer Machine Tools

et al. 2018

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This paper deals with a modern design approach via finite elements in the definition of the main structural elements (rotary table and working unit) of an innovative family of transfer machine tools. Using the concepts of green design and manufacture, as well as sustainable development thinking, the paper highlights the advantages derived from their application in this specific field (i.e., the clever use of lightweight materials to allow ruling out high-consumption hydraulic pump systems). The design is conceived in a modular way, so that the final solution can cover transfers from four to 15 working stations. Two versions of the machines are examined. The first one has a rotary table with nine divisions, which can be considered as a prototype: this machine has been studied in order to set up the numerical predictive model, then validated by experimental tests. The second one, equipped with a rotary table with 15 divisions, is the biggest of the range: this machine has been entirely designed with the aid of the previously developed numerical model. The loading input forces for the analyses have been evaluated experimentally via drilling operations carried out on a three-axis CNC unit. The definition of the design force made it possible to accurately assess both the rotary table and the working units installed in the machine.

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Section: Tuning Of the Stiffness Parameter Of The Fe Modelmentioning

confidence: 99%

A Methodology for the Lightweight Design of Modern Transfer Machine Tools

et al. 2018

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“…It has the advantages of light weight, large stiffness, sound insulation, heat insulation and fire resistance. Zhao et al (2017aZhao et al ( , 2017b first proposed to a new type of aluminum alloy single-layer latticed shell with honeycomb plate. Lots of tests and numerical simulation showed that the stiffness of the aluminum alloy single-layer latticed shell with honeycomb plate is significantly better than that of the traditional aluminum alloy single-layer latticed shell.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical study on the mechanical properties of honeycomb plate box-type hollow roof structure

Zhao

Zheng

et al. 2022

Advances in Structural Engineering

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In this paper, a new honeycomb plate box-type hollow roof structure is prepared. The failure mode and mechanical properties of the box-type hollow roof structure were analyzed by bearing capacity test and numerical analysis. The validity of the numerical analysis model is verified by comparing the results of bearing capacity test with the results of the complete coordinated model and the coupled model analysis. The results show that the failure mode of the specimen is tensile failure of the surface plate of the honeycomb plate with strengthened frame and buckling instability of the plate near the joint. The box-type hollow roof structure has good ductility. The results of static analysis and nonlinear buckling analysis of the honeycomb plate box-type hollow roof structure are carried out by coupling model are more consistent with the results of bearing capacity test.

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“…The basic configuration of the system is equivalent to an enlarged honeycomb panel, as shown in Figure 1a. Studies have shown that [20][21][22] this novel roof system combines load bearing and enveloping into one body that is lightweight and has high stiffness and excellent seismic performance as well as favourable constructional and physical properties. In single-floor industrial plant buildings of various span lengths (Figure 1b), the HPSS is especially suitable for long-span roof structures, such as gravity-sensitive gymnasiums and airplane hangars (Figure 1c), which demonstrates broad application prospects.…”

Section: Introductionmentioning

confidence: 99%

The mechanical behaviour of new long-span hollow-core roofs based on aluminum alloy honeycomb panels

Zhao¹,

Ma²,

Du³

2019

Mater. Tehnol.

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This article proposes a new type of spatial structure that is based on the principle of an aviation structure skin force bearing. The structure consists of honeycomb panels and specialized connecting pieces to spatially combine the honeycomb panels and form a novel skeleton-free hollow-core roof system (referred to as a "honeycomb panel structural system" (HPSS)). To evaluate the stitching results of the new structure, its connection performance, failure mechanism and limiting load were examined, and the full-scale samples that were designed and manufactured from two sets of HPSS were employed to conduct the experimental research. The results indicated that the new structure has a high spatial stiffness and loading capacity. The failure mode of the two test specimens comprises the shear damage of the connector and the buckling failure of the honeycomb panel. The existing rectangular sandwiched honeycomb panel buckling theory cannot correctly reflect the plastic deformation or failure of the sandwiched material, this paper obtained the analysis method for the honeycomb panel buckling characteristic value that is consistent with practical conditions. Using different simulation methods, the comparative analysis results revealed that the finite-element coupling method proposed in this paper can adequately simulate the actual operating state of the connector between two honeycomb panels. This method is feasible, highly efficient, and provides a theoretical basis for future revision of the design rules for this new type of spatial structure.

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Shear Strengths of Different Bolt Connectors on the Large Span of Aluminium Alloy Honeycomb Sandwich Structure

Cited by 16 publications

References 32 publications

A Methodology for the Lightweight Design of Modern Transfer Machine Tools

A Methodology for the Lightweight Design of Modern Transfer Machine Tools

Experimental and numerical study on the mechanical properties of honeycomb plate box-type hollow roof structure

The mechanical behaviour of new long-span hollow-core roofs based on aluminum alloy honeycomb panels

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