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All Outputs (189)

3D lattice model for post-yield and fracture behaviour of timber. (2008)
Journal Article
Reichert, T., & Ridley-Ellis, D. (2008). 3D lattice model for post-yield and fracture behaviour of timber. Timber Engineering,

The paper describes the development of a bespoke Finite Element program to model timber with a three dimensional lattice of single spring elements. These springs mimic meso-scale timber behaviour, namely the crushing and separation of fibre bunches b... Read More about 3D lattice model for post-yield and fracture behaviour of timber..

Promoting the science and engineering of timber to children. (2008)
Journal Article
Ridley-Ellis, D. (2008). Promoting the science and engineering of timber to children. Timber Engineering,

The UK’s young people are generally very poorly informed about the opportunities that exist for them in wood science and timber engineering, and commonly perceive the sector to be old-fashioned, unrewarding, environmentally damaging, and requiring of... Read More about Promoting the science and engineering of timber to children..

Determining the Shear Modulus of Sitka Spruce from Torsion Tests (2008)
Presentation / Conference Contribution
Khokhar, A., Zhang, H., Ridley-Ellis, D., & Moore, J. (2008). Determining the Shear Modulus of Sitka Spruce from Torsion Tests. In 10th World Conference on Timber Engineering 2008 (2137-2144)

This paper presents details of the experimental method, and preliminary results from, a series of torsion tests undertaken to evaluate the shear modulus of Sitka spruce (Picea sitchensis) timber. Direct torsion tests were used to determine the variat... Read More about Determining the Shear Modulus of Sitka Spruce from Torsion Tests.

Do people grow on trees? Guidance for employers in the Scottish forest and timber industries. (2008)
Report
Bond, S., Thomson, E., MacPherson, S., & Ridley-Ellis, D. (2008). Do people grow on trees? Guidance for employers in the Scottish forest and timber industries

The final report for the Forest Industries Recruitment and Retention (FIRRS) project. Forests and their products are hugely important to the economic and environmental sustainability of Scotland’s economy and influence many aspects of Scottish soc... Read More about Do people grow on trees? Guidance for employers in the Scottish forest and timber industries..

Timber trumps. (2008)
Digital Artefact
Cavers, A., & Ridley-Ellis, D. (2008). Timber trumps

online (Flash) game about wood properties

Whack-a-stick discovery. (2007)
Digital Artefact
Ridley-Ellis, D. (2007). Whack-a-stick discovery

This flash animation is a powerful simulation of the longitudinal vibration of a solid beam (the basic physics behind modern non-destructive methods of testing timber battens to measure stiffness and predict strength. You can see the effect of str... Read More about Whack-a-stick discovery..

Torsion tests on small and large-scale RHS with circular wall cut-outs (2007)
Presentation / Conference Contribution
Ridley-Ellis, D., Owen, J. S., & Davies, G. (2007). Torsion tests on small and large-scale RHS with circular wall cut-outs.

The results of small and large-scale torsion tests on rectangular section tubes with circular wall perforations are presented and discussed. Perforations are shown to cause the torsional resistance to be re-duced by up to 60% and stiffness to be redu... Read More about Torsion tests on small and large-scale RHS with circular wall cut-outs.

The Educational Needs of the Timber Industries – Report of an Online Survey by the Centre for Timber Engineering. (2006)
Report
Ridley-Ellis, D., & Nolte, S. (2006). The Educational Needs of the Timber Industries – Report of an Online Survey by the Centre for Timber Engineering

This survey was conducted by the Centre for Timber Engineering (CTE) in summer 2005 to investigate the educational needs and preferences of the timber industries. Both employers and employees were asked to define and articulate curriculum and skills... Read More about The Educational Needs of the Timber Industries – Report of an Online Survey by the Centre for Timber Engineering..

Timber Engineering Online. (2006)
Journal Article
Nolte, S., & Ridley-Ellis, D. (2006). Timber Engineering Online. Timber Engineering,

This paper highlights some of the opportunities, challenges and issues encountered in creating online teaching and learning materials for timber engineering that provide an experience equivalent to face-to-face teaching for the student. It introduces... Read More about Timber Engineering Online..

Geometric Non-Linear Behaviour of Single Shear Bolted Joints. (2006)
Journal Article
Reichert, T., & Ridley-Ellis, D. (2006). Geometric Non-Linear Behaviour of Single Shear Bolted Joints. Timber Engineering,

Findings are presented of the first stage of an investigation of second-order effects that influence the resistance and stiffness of single shear bolted joints. These effects develop as a result of joint deformation and the rotation of all, or part,... Read More about Geometric Non-Linear Behaviour of Single Shear Bolted Joints..

Women in education and training for the Scottish wood chain (2006)
Journal Article
Ridley-Ellis, D., & Wise, S. (2006). Women in education and training for the Scottish wood chain. Timber Engineering,

The paper introduces a new project at Napier University in Edinburgh into the issues surrounding entry, progression and retention of female students for courses relating to the growing, processing and utilisation of timber for use in the built enviro... Read More about Women in education and training for the Scottish wood chain.

Timber Plate Dynamics with Space-Time Finite Element (2006)
Journal Article
Zhang, H., Ridley-Ellis, D., & Hapca, A. I. (2006). Timber Plate Dynamics with Space-Time Finite Element. Timber Engineering,

A new space-time finite element formulation for dynamic analysis of timber plates is presented. The method is based on an unconventional Hamilton variational principle and a special technique in time domain interpolation is employed. For the simple c... Read More about Timber Plate Dynamics with Space-Time Finite Element.

The performance of a new blind bolt for moment-resisting connections. (2003)
Presentation / Conference Contribution
Tizani, W., & Ridley-Ellis, D. (2003). The performance of a new blind bolt for moment-resisting connections. In M. A. Jaurrieta, A. Alonso, & J. A. Chica (Eds.), Tubular Structures X: Proceedings of the 10th International Symposium, Madrid, Spain, 18-20 S

The paper introduces the principal findings of a testing programme carried out to assess the performance of a newly developed blind-bolt. The blind-bolt, an evolution of the Lindapter-Hollobolt, is in-tended for use when making moment-resisting conne... Read More about The performance of a new blind bolt for moment-resisting connections..

Design of RHS for torsion using simplified thick wall theory. (2003)
Journal Article
Ridley-Ellis, D., Owen, J. S., & Davies, G. (2003). Design of RHS for torsion using simplified thick wall theory. The structural engineer : journal of the Institution of Structural Engineers, 81, 31-36

The theory of torsion in Rectangular Hollow Sections (RHS) is reviewed and discussed with reference to design code treatments in the UK, Europe and the USA. The classical theories based on thin wall and thick wall assumptions are compared, and thick... Read More about Design of RHS for torsion using simplified thick wall theory..

Torsional behaviour of rectangular hollow sections (2003)
Journal Article
Ridley-Ellis, D., Owen, J. S., & Davies, G. (2003). Torsional behaviour of rectangular hollow sections. Journal of Constructional Steel Research, 59, 641-663. https://doi.org/10.1016/S0143-974X%2802%2900060-3

The results of a series of full-scale torsion tests on rectangular hollow sections (RHS) are presented and discussed. The observed torque–twist behaviour is compared to that predicted by an extended version of Marshall’s simplified thick wall torsion... Read More about Torsional behaviour of rectangular hollow sections.

Theoretical and measured torsional behaviour of rectangular hollow sections. (2002)
Presentation / Conference Contribution
Ridley-Ellis, D., Owen, J. S., & Davies, G. (2002). Theoretical and measured torsional behaviour of rectangular hollow sections.

Theories for torsion of Rectangular Hollow Sections (RHS) are compared and thick wall theory is shown to be a better representation of behaviour. The results of torsion tests on hot-finished steel RHS are discussed and compared to the predictions of... Read More about Theoretical and measured torsional behaviour of rectangular hollow sections..

Flexural behaviour of Rectangular Hollow Sections with circular side wall openings. (2001)
Presentation / Conference Contribution
Ridley-Ellis, D. J., Owen, J. S., & Davies, G. (2001). Flexural behaviour of Rectangular Hollow Sections with circular side wall openings. In R. Puthli, & S. Herion (Eds.), Tubular Structures IX : Proceedings of the Ninth International Symposium and Euroc

The influence of circular web openings on the flexura behaviour of Rectangular Hollow Sections is introduced. The results of full-scale laboratory tests in three and four-point bending and the development of analytical finite element models to predi... Read More about Flexural behaviour of Rectangular Hollow Sections with circular side wall openings..

Rectangular Hollow Sections with circular web openings. (2000)
Thesis
Ridley-Ellis, D. Rectangular Hollow Sections with circular web openings. (Thesis). The University of Nottingham. Retrieved from http://researchrepository.napier.ac.uk/id/eprint/8229

The primary aim of the project was to develop the basis for a set of rules to be used in the design of RHS slim floor edge beams with web openings. However, since the research is fundamental in nature, the findings are also applicable to other situa... Read More about Rectangular Hollow Sections with circular web openings..

Fundamental behaviour of rectangular hollow sections with web openings. (1998)
Presentation / Conference Contribution
Ridley-Ellis, D., Davies, G., & Owen, J. S. (1998). Fundamental behaviour of rectangular hollow sections with web openings. In Y. S. Choo, & G. J. van der Vegte (Eds.), Proceedings of the 8th International Symposium on Tubular Structures (ISTS) (167-175)