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Crashworthiness and energy absorption of UHPFRC-steel

2023年5月1日  In this study, the peak crushing force (PCF) and specific energy absorption (SEA) of sandwich structures are response indicators to evaluate the performance of

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Crushing performances and crashworthiness optimization of

2023年11月27日  A finite element model of a thin-walled square tube is developed for evaluating its crushing performance. The axial crushing behavior of the square tube is

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Crushing performance evaluation of gradient Sierpinski

This paper proposes a novel Sierpinski triangular fractal column with graded thickness (STFC-GT) to improve the crushing stability and energy absorption of Thin-Walled

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Crushing analysis and multiobjective

2021年5月15日  Guangjun Gao Yao Yu. 674 Accesses. 13 Citations. Explore all metrics. Abstract. This paper proposes a new type of energy

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Crushing performances and crashworthiness optimization of

Abstract. A finite element model of a thin-walled square tube is developed for evaluating its crushing performance. The axial crushing behavior of the square tube is experimentally

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Crushing performance of auxetic tubes under quasi-static

2022年5月10日  The maximum crushing force efficiency was about 70% for AC auxetic tube, while this parameter was obtained for RE, AR and AC structures, 33.3%, 67.6%

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Lightweight cost-effective hybrid materials for energy

2022年12月6日  The following are the crushing critical parameters: peak crushing load (\({\mathrm{F}}_{\mathrm{ip}}\)), mean crushing load (\({\mathrm{F}}_{\mathrm{m}}\)),

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Study on Crushing Performance of Double-roller Crusher

DEM was used to simulate the crushing process of particles with different shapes in doubleroller crusher. By particle replacement and particle bounding, crushing processes

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Applied Sciences Free Full-Text Crushing

2019年1月21日  Abstract. Foam concrete is a low-density controlled strength material that can potentially be used for accommodating different types of particles—recycled fine aggregate being an example. The paste

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Crushing characteristics and performance evaluation of iron

2023年12月1日  1. Introduction. Due to the decreasing reserves of high-grade iron ore and secondary resources used for steelmaking, it has become an important research and development area to improve the grade of iron ore through crushing (Gul et al., 2014).The quality of iron ore crushing directly affects the performance of pellets and sinter, so as to

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crushing performance - 英中 – Linguee词典

大量翻译例句关于"crushing performance" – 英中词典以及8百万条中文译文例句搜索。 在这方面，委员会认为，目前 正在加强的业绩管理系统(见 A/65/305)应包括为主管人员以及工作人员制订的 与培训有关的指标，以确保方案管理人员负责查明技能差距并评估培训活动对本 单位业绩的影响。

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Crushing performances and crashworthiness optimization of

2023年11月27日  A finite element model of a thin-walled square tube is developed for evaluating its crushing performance. The axial crushing behavior of the square tube is experimentally evaluated, and the obtained force–displacement responses are applied to estimate the accuracy of the model. The validated model is subsequently used to study

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Dynamic crushing performance of foam-filled periodic

2024年4月15日  Abstract. To achieve excellent dynamic crushing performance, an attractive foam-filled periodic hybrid cellular (F-PHC) structure containing both hexagonal and re-entrant cells was designed and fabricated. Dynamic crushing experiments for foam-filled PHC structures were carried out using a direct impact Kolsky bar testing system.

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Crushing performances and crashworthiness optimization of

The results show that the B9 double tube has the best comprehensive performance. The B9 double tube is constructed with a gradient thickness instead of a uniform thickness to improve its crushing performance under large-angle loadings and raise its critical angle of occurring global bending deformation.

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Design Optimization of Hammer Blade Crusher to Improve the Crushing ...

2023年7月24日  Ren W, Wang SQ, Wu JL. Effect of raw material type, crushing sieve diameter and number of hammer blades on crushing particle size[J]. Feed Industry. 2017; 38(17):12-16. Qin Y. Study on the effect of hammer blade mill performance on conventional feed crushing effect[D]. Jiangnan University; 2009. Gao D, Gu HL, Chong Z.

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Liner wear and performance investigation of primary

2004年11月1日  Similar work conducted by other authors (Flavel et al., 1988, Svensson and Steer, 1990, Burkhardt, 1982) suggests the idea that enhancing the performance of the primary crushing process serves to improve overall grinding efficiency.Flavel et al. (1988) listed examples of successes obtained by several research programs and operations that

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Comparison of the crushing performance of hollow and

2010年9月1日  The crushing performance of the hourglass type – Y shaped composite tubes (HYSF and HYDF) filled with polyurethane foam was very similar to the hourglass type – X geometry tubes (refer Fig. 9 a and b). Due to the tube geometry (no alignment of triggering profiles to the direction of the compressive loading), there was no initial ...

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Crushing and energy absorption performance of different geometrical ...

2011年1月1日  The crushing behaviour of the hourglass type – A composite tubes with 2 mm thickness tubes (HADT1 and HADT2) was very similar to the 1 mm thickness composite tube series (HAST1 and HAST2). The deformation patterns and the crushing performance of these composite tubes are given in Fig. 10 a – bottom and b – bottom. The typical failure ...

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Dynamic crushing performance of bio-inspired sandwich

2023年3月1日  To achieve excellent dynamic crushing performance, an attractive foam-filled periodic hybrid cellular (F-PHC) structure containing both hexagonal and re-entrant cells was designed and fabricated. Dynamic crushing experiments for foam-filled PHC structures were carried out using a direct impact Kolsky bar testing system.

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CRUSHING PLANT PROCESS OPTIMISATION

2024年5月1日  In order to predict the performance of the crushing plant a modelling and simulation system is used, this is briefl y described followed by a description on the combined optimisation routine and expert system. It is the combined routines that enable the problem to be solved ef fi ciently. For the optimisation of the system a cost function is

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Crushing performance of a novel tetra-missing rib

2024年3月1日  However, it can be found from Fig. 6 (b) that TMRUH still leads in terms of energy absorption, indicating that the symmetrical design of the tetra-missing rib subunit can effectively improve the energy absorption performance of the honeycomb. Download : Download high-res image (301KB) Download : Download full-size image; Fig. 6.

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Effect of triggering on the axial crushing behavior of GFRP

2024年1月19日  The weaving angle in the roll wrapping process of FRP tubes has a significant influence on the performance of the structure. 53-55 At this point, the composite tubes, comprising 8 plies, each with an approximate thickness of 0.25 mm and weaving angles of 0°/90° are first pre-impregnated, then wrapped on cylinders having 40 mm

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The axial crushing performance of bio-inspired hierarchical

2023年2月1日  The study by Tarafdar et al. [58] showed that the crushing performance of hybrid multi-cell sandwich tubes improved when more GFRP tubes were incorporated. Nature offers many good references and inspirations for devising thin-walled structures with better mechanical performance, such as: the stem of wheat [59], grass [60] and bamboo

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Crushing performance evaluation of gradient Sierpinski

Crushing performance of the STFC with thickness gradient and uniform thickness. To investigate the strengthening mechanism of the thickness gradient design, this section compares the dynamic characteristics of STFC-GT and STFC-UT at an initial velocity of 13.89 m/s. This velocity is required by the China-New Car Assessment Program (C-NCAP).

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Low velocity axial impact crushing performance of empty

2011年7月1日  The crushing performance of empty beverage cans was studied for different initial impact velocities such as 1.4 m/s, 2.2 m/s, 3.1 m/s, 3.8 m/s, 4.4 m/s and 4.9 m/s. For each case a minimum of ten tests have been carried out and the average of all the parameters were taken into account to calculate the performance parameters which are

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Crushing performance of a novel tetra-missing rib

2024年3月1日  Section snippets Structural design. The novel structure and evolution process proposed in this paper are depicted in Fig. 1. Building upon the tetra-missing rib honeycomb, the new structure connects the subunit of the tetra-missing rib honeycomb with its mirror-generated subunit to create a new axisymmetric unit.

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On the crushing response of the functionally graded metallic foams ...

2020年12月1日  It is sufficient to reflect the sound performance of graded foams under dynamic compression. 5. Conclusions. Finite element methodology is employed to study the crushing response of functionally graded foams under quasi-static and dynamic compression. Two groups of graded foams are designed and constructed by using 3D

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Design and analysis of buckling-induced honeycombs with

2023年12月1日  The results demonstrated that the crushing performance of BIHs can be artificially controlled by altering their shape parameters. In particular, the initial peak force (IPF) and the undulation of the mechanical response of BIH can be effectively reduced by increasing the layer number or arranging the asymmetric layers. A finite element model ...

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Crashworthiness performance and optimization of multi-cell

2023年9月1日  Effect of tube thickness on crushing performance. (a) Crushing force verse displacement curves, (b) Comparison of EA and SEA, (c) Comparison of MCF. 5.2.2. Influence of cell side length. The crashworthiness performance of thin-walled structures is also closely related to the tube geometries. Based on the theoretical prediction, the

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