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The purpose of this paper is to realize the lightweight of connecting rod and meet the requirements of low energy consumption and vibration. Based on the structural design of the original connecting rod, the finite element analysis was conducted to reduce the weight and increase the natural frequencies, so as to reduce materials consumption and improve the energy efficiency of internal combustion engine.

The finite element analysis, structural optimization design and topology optimization of the connecting rod are applied. Efficient hybrid method is deployed: static and modal analysis; and structure re-design of the connecting rod based on topology optimization.

After the optimization of the connecting rod, the weight is reduced from 1.7907 to 1.4875 kg, with a reduction of 16.93%. The maximum equivalent stress of the optimized connecting rod is 183.97 MPa and that of the original structure is 217.18 MPa, with the reduction of 15.62%. The first, second and third natural frequencies of the optimized connecting rod are increased by 8.89%, 8.85% and 11.09%, respectively. Through the finite element analysis and based on the lightweight, the maximum equivalent stress is reduced and the low-order natural frequency is increased.

This paper presents an optimization method on the connecting rod structure. Based on the statics and modal analysis of the connecting rod and combined with the topology optimization, the size of the connecting rod is improved, and the static and dynamic characteristics of the optimized connecting rod are improved.

Thin-walled structures inevitably always have manufacturing deviations, which affects the assembly quality of mechanical products. The assembly quality directly determines the performances, reliability and service life of the products. To achieve the automatic assembly of large-scale thin-walled structures, the sizing force of the structures with deviations should be calculated, and its assembling ability should be studied before assembly process. The purpose of this study is to establish a precise model to describe the deviations of structures and to study the variation propagation during assembly process.

Curved thin-walled structures are modeled by using the shell element via the absolute nodal coordinate formulation. Two typical deviation modes of the structure are defined. The generalized elastic force of shell elements with anisotropic materials is deduced based on a continuum mechanics approach to account for the geometric non-linearity. The quasi-static method is introduced to describe the assembly process. The effects of the deviation forms, geometrical parameters of the thin-walled structures and material properties on assembly quality are investigated numerically.

The geometric non-linearity of structure and anisotropy of materials strongly affect the variation propagation and the assembly quality. The transformation and accumulation effects of the deviations are apparent in the multiple assembly process. The constraints on the structures during assembly can reduce assembly deviation.

The plate element via the absolute nodal coordinate formulation is first introduced to the variation propagation analysis. Two typical shape deviation modes are defined. The elastic force of structures with anisotropic materials is deduced. The variation propagation during the assembly of structures with various geometrical and material parameters is investigated.

Finite element analysis of underwater transducers typically requires a high level of expertise, and the iterative process of testing various sizes, material parameters and other factors is often inefficient. To address this challenge, this paper aims to introduce underwater transducer parametric simulation (UTPS) software to streamline the design and optimization process.

The design methodology integrates the strengths of ANSYS Parametric Design Language (APDL) for parametric design with the Qt Creator framework for developing a visual interface. C++ is used to encapsulate complex, hard-to-master APDL macros and interact with ANSYS software to execute the relevant APDL macros, performing finite element analysis on the underwater transducer in the background. The results are then processed and displayed on the visual interface.

UTPS enables parametric modeling, modal analysis, harmonic response analysis and directivity analysis of underwater transducers. Users only need to input parameters into the software interface to obtain the transducer’s performance, significantly improving work efficiency and lowering the professional threshold. A prototype transducer was fabricated and tested based on UTPS results, which confirmed the accuracy of the software.

This paper presents an innovative parametric simulation tool for underwater transducers, combining finite element analysis and APDL to simplify and expedite the design process. UTPS reduces the need for specialized knowledge, cutting down on training costs, while its parametric design capabilities accelerate the design process, saving resources.

The purpose of this paper is to investigate the innovation capabilities of Chinese enterprises. It is important to understand these innovation capabilities and to find how they might relate to promoting innovativeness.

In this paper, data obtained from a survey of enterprises in the Chinese provinces Liaoning and Henan are analysed using multiple regression to ascertain how facets of innovation capabilities might enhance the likelihood of innovation success. Analysis is conducted for innovation defined as incremental, radical and the total of both.

It is found that focusing on customers tends to reduce innovation for Chinese companies, whilst competitor orientation, knowledge enhancement and management capability are associated with enhanced innovative ability.

There are many determinants of innovation, notably as skills and attributes of the individual entrepreneur. In this paper the focus is on organisational facets and not on those of the individual. The paper shows the importance of monitoring competitors, as well as managing and enhancing knowledge.

The paper reports the analysis and extent of different capabilities for successful innovation from a unique data set from two provinces in China.

The emulation of synapses is essential to neuromorphic computing systems. Despite remarkable progress has been made in the two-terminal device (memristor), three-terminal transistors evoke greater attention because of the controlled conductance between the source and drain. The purpose of this paper is to investigate the synaptic plasticity of the TiO₂ nanowire transistor.

TiO₂ nanowire transistor was assembled by dielectrophoresis, and the synaptic plasticity such as paired-pulse facilitation, learning behaviors and high-pass filter were studied.

Facilitation index decreases with the increasing pulse interval. A bigger response current is obtained at the pulses with higher amplitude and smaller intervals, which is similar to the consolidated memory at the deeply and frequently learning. The increased current at the higher stimulus frequency demonstrates a promising application in the high-pass filter.

TiO₂ nanowire transistors possess broad application prospects in the future neural network.

This study aims to evaluate the tribological behavior of water-lubricated rubber bearings sliding against stainless steel under different lubricate conditions.

The water-lubricated rubber bearings under various normal loads and sliding speeds were carried out on the ring-block friction test, and the wear morphology is test conducted by using scanning electron microscope.

The results indicate that the surface of water-lubricated rubber bearings has a more alternative friction coefficient and wear rate under seawater than other lubricate conditions. The seawater not only acts as a lubricating medium but also brings microstructure while corroding the rubber interface, thereby further enhancing the lubricating effect and storing abrasive debris.

In this paper, tribological properties of the water-lubricated rubber bearing on ring-block friction test has been investigated. Water-lubricated rubber bearing was carried out on various lubricate conditions, and the friction coefficient, wear rate and worn surface were analyzed. Also, the effects of sliding speeds were investigated.

The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-06-2020-0204/

In the past, the field of public libraries proved to be a neglected area of government in terms of allocating handsome budgets for adequate services and developing infrastructure. The aim of this research is (1) to understand the level of library professionals and associated challenges in the preparation and implementation of the budget in public libraries and (2) to analyze the annual grand and regular library budget allocated to public libraries.

A comprehensive literature search was carried out from work published in the past – the quantitative study based on a structured research questionnaire followed by the five-point Likert scale. The primary data were collected by distributing printed questionnaires among the library professionals serving in the directorate of public libraries and its suboffices. The secondary data “Budget Grand” for seven years (2009–2015) and the regular budget for two years (2015–2016) were collected from seven public libraries, and data on the district population and literacy rate were obtained from the provincial bureau of statistics. The authors used the one-way ANOVA on primary data to determine the average difference between samples and descriptive statistics on secondary data.

Survey results show that budgeting is a useful tool for predicting the future, controlling resources and improving employee performance and departmental levels. The findings disclosed that the annual budget review includes guidelines for implementation without adequate discussion and guidance for overcoming challenges. In addition to increasing print and database resources, currency fluctuations, unfair resource allocation and budgeting processes proved to be a potential obstacle to the execution of the library budget. Moreover, library material usage and regular membership are decreasing compared to literacy rates in each district of the province. It also turned out that the limited resources in a library compared to the population and the insufficient budget for operation, maintenance and other library processes posed another challenge for the administration.

The results, which are based on the primary data of experts and the secondary data on the library budget, can help the directorate of public libraries to push ahead with budgetary reforms and overcome challenges.

This article outlines some basic steps for librarians, publishers and sellers to cope with changes caused by currency fluctuations and falling budget pressures. Given the regional population, literacy gaps and the current state of libraries, the results could also cause the government to expand the public library network across the province.

The study builds upon the qualitative method using a questionnaire and on the secondary data for an in-depth understanding of the whole budgetary process. This comprehensive coverage of the budgeting process provides professionals with useful information in preparing a balanced budget for public libraries.