You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
61 lines
1.8 KiB
61 lines
1.8 KiB
\newif\ifdraft\draftfalse
|
|
\newif\ifsand\sandtrue
|
|
|
|
\SANDprintDate{\today}
|
|
\SANDnum{SAND88-0616}
|
|
\SANDauthor{G. D. Sjaardema and G. W. Wellman\\
|
|
Applied Mechanics Division I}
|
|
\newcommand{\theTitle}{Numerical and Analytical Methods for Approximating the
|
|
Eccentric Impact Response (Slapdown) of Deformable Bodies}
|
|
|
|
\title{\theTitle}
|
|
\ifsand
|
|
\pdfbookmark[1]{Cover}{cover}
|
|
\doCover
|
|
\newpage
|
|
\else
|
|
\SANDmarks{cover}
|
|
\setcounter{page}{3}
|
|
\fi
|
|
|
|
\pdfbookmark[1]{Title}{title}
|
|
|
|
%\begin{titlepage}
|
|
\begin{center}
|
|
\SANDnumVar\\
|
|
\SANDreleaseTypeVar\\
|
|
\ifdraft
|
|
Draft Date: \SANDprintDateVar\\
|
|
\else
|
|
Printed \SANDprintDateVar\\
|
|
\fi
|
|
|
|
\vspace{0.75in}
|
|
\CoverFont{m}{24}{28pt}
|
|
\theTitle\\
|
|
\vspace{0.5in}
|
|
\CoverFont{m}{12}{14pt}
|
|
\SANDauthorVar\\
|
|
Simulation Modeling Sciences Department\\
|
|
Sandia National Laboratories\\
|
|
Albuquerque, NM 87185-0380\\
|
|
\vspace*{.4in}
|
|
\textbf{Abstract}
|
|
\end{center}
|
|
\vspace{-.4cm}\par
|
|
Analytical and numerical methods have been developed to approximate
|
|
the eccentric impact response of deformable bodies. The eccentric
|
|
impact response is commonly known as {\em slapdown} since the
|
|
off-center impact gives the body a rotational velocity which causes
|
|
impact at the opposite end. A code, \SLAP , has been written to
|
|
approximate the slapdown behavior of deformable bodies. The body is
|
|
idealized as a three degree-of-freedom system with nonlinear impact
|
|
behavior.
|
|
|
|
Several parameters of interest to the analysis and design of laydown
|
|
weapons were studied to determine their effects on the secondary
|
|
impact velocities (slapdown). Parameters studied are aspect ratio of
|
|
the body, stiffness of the initial impact, and friction between the
|
|
target and the body. Rules for applying the results of scale model
|
|
tests to full scale bodies are developed and confirmed for nonlinear
|
|
spring behavior.
|
|
|