A piecewise exponential model for three-dimensional analysis of sandwich panels with arbitrarily graded core

Open Access funded by Engineering and Physical Sciences Research Council Acknowledgements Financial support of this research by the EPSRC (Engineering and Physical Sciences Research Council) (EP/P503299/1, EP/P503930/1), United Kingdom, is gratefully acknowledged.Peer reviewedPublisher PD

Research study to develop methods for solving problems associated with space vehicles Monthly progress report /Final/

Trigonometric function algorithms for algebraic simplification in computer program

Noise of a model counterrotation propeller with reduced aft rotor diameter at simulated takeoff/approach conditions (F7/A3)

A model high-speed advanced counterrotation propeller, F7/A3, was tested in the NASA Lewis Research Center 9 by 15 foot Anechoic Wind Tunnel at simulated takeoff/approach conditions of 0.2 Mach number. Acoustic measurements were taken with an axially translating microphone probe, and with a polar microphone probe which was fixed to the propeller nacelle and could take both sideline and circumferential acoustic surveys. Aerodynamic measurements were also made to establish propeller operating conditions. The propeller was run at two setting angles (front angle/rear angle) of 36.4/43.5 and 41.1/46.4 degrees, forward rotor tip speeds from 165 to 259 m/sec, rotor spacings from 8.48 to 14.99 cm based on pitch change axis separation, and angles of attack to 16 degrees. The aft rotor diameter was 85 percent of the forward rotor diameter to reduce tip vortex-aft rotor interaction as a major interaction noise source. Results are compared with equal diameter F7/A7 data which was previously obtained under similar operating conditions. The aft rotor-alone tone was 7 dB lower for the reduced diameter aft rotor, due to reduced tip speed at constant rpm. Interaction tone levels for the F7/A3 propeller were higher at minimum row spacing and lower at maximum spacing

Three-dimensional elastic deformation of functionally graded isotropic plates under point loading

Acknowledgement Financial support of this research by The Royal Society (UK) under grant number JP090633 is gratefully acknowledged.Peer reviewedPostprin

(SNP136) Myrtle Woodward interviewed by Dorothy Noble Smith, transcribed by Mara Meisel, Rebecca Popp and Heather Browne

Records an interview with Myrtle Woodward, (née Broyles), who lived in the mountains near Syria, Virginia. Describes daily life in the mountains, touching on the work of growing and preserving food, herbal remedies and holidays. Also recalls her experiences with local entrepreneur George Freeman Pollock, owner of nearby Skyland resort, who was a major influence in the establishment of Shenandoah National Park.https://commons.lib.jmu.edu/snp/1114/thumbnail.jp

Ecopsychology and race : an exploratory study

While ecopsychology has brought critical attention to the relationship between the natural environment and the human psyche, very little has been written about how race and racism shape our experience of the natural world. This qualitative study asked the following central question: How are race and racism relevant to ecopsychology in theory and practice? Twelve semistructured interviews were conducted with a racially diverse group of ecopsychologists, environmental justice activists and spiritual leaders. Interview data emphasized the importance of employing a broad definition of ecopsychology that encompasses not only the relationship between psyche and nature, but the relationship between psyche, nature and society. The findings also suggested that in order to address race and racism in practice, applied ecopsychology should not focus on an individual therapy model, but instead turn to group and community level interventions such as urban agriculture and green jobs. The study\u27s findings point to a need for ecopsychology to critically examine its own whiteness, expand its analysis on how racism and white supremacy are linked to the ecological crisis, and to ally itself with people of color working towards similar goals

Performance of functionally graded plates under localised transverse loading

AbstractThis paper presents a study of the bending of an isotropic functionally graded plate under localised transverse load through a combination of analytical and computational means. The analytical modelling is based on the recently developed three-dimensional elasticity solution, expanded to cover different loading types, whilst the Finite Element model uses graded isoparametric elements. The plate under consideration is assumed to be simply supported, with Young’s and shear moduli varying exponentially through the thickness and the Poisson’s ratio constant. Comparative analysis of stress and displacement fields in functionally graded and homogeneous plates subjected to uniformly distributed and patch loadings is carried out

Three-dimensional elasticity analysis of sandwich panels with functionally graded transversely isotropic core

Open Access via Springer Compact Agreement. Financial support of this research by the EPSRC DTA is gratefully acknowledgedPeer reviewedPublisher PD