Terms of Use
Last updated 11 November 2026
Educational purposes only
Everything on xystress, including the simulations, results, worked solutions, explanations, and exported files, is provided for educational purposes only.
The simulations use simplified models, stated assumptions, and numerical approximations, and their results can contain errors. They are not engineering advice. Don't use them to design, analyse, check, or certify real structures, machines, or systems, or for decisions that affect safety. Where a tool shows a design-code method or a pass/fail check, it is a simplified teaching example, not a code check. For real work, use the applicable codes and standards, and have the results checked by a qualified professional.
The site
xystress (“we”) offers free, interactive engineering simulations for learning and teaching. You don't need an account. We may change, add, or remove simulations and features, or stop offering the site, at any time.
Using results, screenshots, and links
You are welcome to use screenshots, exported data, and links to simulations in homework, reports, teaching, and presentations. A mention of the site is appreciated.
Our content
The text, graphics, and software of the site belong to xystress and are protected by copyright. Apart from the uses above, don't copy, republish, or redistribute substantial parts of the site or its code, or present them as your own, without our written permission.
Acceptable use
Don't attempt to disrupt, overload, or gain unauthorised access to the site or the systems that serve it, don't send it large volumes of automated requests, and don't use it for anything unlawful.
No warranty
The site is provided “as is” and “as available”, without warranties of any kind, including warranties of accuracy, fitness for a particular purpose, or uninterrupted availability.
Limitation of liability
To the fullest extent permitted by law, we are not liable for any loss or damage arising from your use of the site, from being unable to use it, or from relying on its results. Nothing in these terms limits liability that cannot be limited by law.
Other sites
Links to other websites are provided for convenience. We are not responsible for their content or their privacy practices.
Privacy
How the site handles information is described in the Privacy Policy.
Changes to these terms
We may update these terms. The date at the top shows the latest version, and using the site after a change means you accept the updated terms.
Contact
Questions about these terms: contact [at] xystress.com.