"Stress Relief: Improving Structural Strength of 3-D Printable Objects," a paper presented at SIGGRAPH 2012 from Purdue University's Bedrich Benes demonstrated an automated system for predicting when 3D models would produce structural weaknesses if they were fed to 3D printers, and to automatically modify the models to make them more hardy.
Findings were detailed in a paper presented during the SIGGRAPH 2012 conference in August. Former Purdue doctoral student Ondrej Stava created the software application, which automatically strengthens objects either by increasing the thickness of key structural elements or by adding struts. The tool also uses a third option, reducing the stress on structural elements by hollowing out overweight elements.
"We not only make the objects structurally better, but we also make them much more inexpensive," Mech said. "We have demonstrated a weight and cost savings of 80 percent."
The new tool automatically identifies "grip positions" where a person is likely to grasp the object. A "lightweight structural analysis solver" analyzes the object using a mesh-based simulation. It requires less computing power than traditional finite-element modeling tools, which are used in high-precision work such as designing jet engine turbine blades.
New Tool Gives Structural Strength to 3-D Printed Works
Writing in The Journal of Health Economics, three economists claim (Sci Hub mirror) that "a one standard deviation reduction in daily stock market returns is associated with a 0.6% increase in fatal car accidents that happen after the stock market opening" and that this is robust across "a battery of falsification tests."
The latest installment of the always-delightful McMansion Hell (previously) departs from the usual format of mercilessly skewering the tasteless custom homes of the contemporary super-rich and instead delves into their historic precedent, the 1970s-vintage "proto-McMansion," AKA the "Styled Ranch."
For decades, the "bystander effect" (previously) has been a bedrock of received psychological wisdom: "individuals are less likely to offer help to a victim when other people are present; the greater the number of bystanders, the less likely it is that one of them will help."
After years of hearing a steady drumbeat about the necessity of surfing the web under the protection of a VPN, even the most technophobic among us are starting to come around. But even knowing the dangers one can face from cybercrooks phishing for information from unsuspecting victims online, those last holdouts still have some fears. […]
You may not realize it, but some of the biggest films in movie history have been edited using the same tools some of you use to cut your video of vacationing at Disney World. Giant movies from Oscar favorites The Social Network and Gone Girl to blockbusters like Avatar, Deadpool, and last year’s Terminator: Dark […]
Now that the initial furor and shortages have subsided, it’s probably not a bad time to start considering your long-term cleaning and disinfecting plans. Sure, that might seem anywhere from overly cautious to outright ridiculous, but the threat of COVID-19 appears poised to be present for a while and the need for quick travel clean-up […]