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## Mathcad Community Challenge March 2022 - Planetary Gear Calculator

Let’s face it, planetary gears are cool. They are used in all kinds of mechanisms, including transmissions, motors, and turbines. Your challenge, should you choose to accept it, is to use Mathcad to build a worksheet that calculates the gear ratios and output speeds of a planetary gear under different configurations. The math behind the gear ratios is straightforward. But users should be able to select: The sun or planet carrier as the input; The planet carrier or ring as the output; and, The ring, sun, or planet carrier as the stationary component. How can the user select the desired component? How can you add intelligence to the worksheet to prevent an incorrect combination of input, output, and stationary? What inputs do you want for your calculator? You will have to make some choices. Your choices could include: Number of planets Number of teeth Component diameters Module / pitch Tools that you might consider include Combo boxes, programs, and functions involving strings. Here are some technical references to get you started: KHK Gears Instructables How Stuff Works Once again, this is a great project for students to work on in teams. Make the worksheet as simple or as complicated as you want. Others can build on your work, and you can build on others. Let’s see what the community can create! Good luck!   Find the Mathcad Community Challenge Guidelines here!
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## PTC Community Spotlight: Professor Valery Ochkov

A Mathcad user for 25 years, Professor Valery (‘Val’) Ochkov takes to the mountains when not involved in developing training and educational software for fossil and nuclear power plants.  He’s shown below in the Chimbulak region of Kazakstahn.   Val has long been involved in the Mathcad community! See the photo of the “Mathcad Clock.”       This is from a post back in 2010!  Beyond answering questions, Valery is also known for using math equations to create designs and authoring Mathcad trivia challenges for other community members to participate in. Some of the more entertaining challenges might be the Hare and Snell’s law and the Problem of Cockroach Races.  The Bicycle Post where Valery quizzes the community on how to solve “How many strokes with a bicycle pump need to be done to inflate the tire to 5atm” also inspired engagement. When asked for hobbies that don’t involve hiking boots, Val assured us his hobbies really are writing books and articles about Mathcad.   He’s now deeply interested in using Mathcad for STEM education, the subject of his latest book, 2⁵ Problems for STEM Education 2 (2020). He says collaborations with community members were critical to developing the material.  Way to go Mathcad Community!  Keep Collaborating! Keep engaging and great things like a book is born!
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## Creo Parametric 2.0 integration with Mathcad Prime 3.0

Creo Parametric 2.0 integration with Mathcad Prime 3.0.     (view in My Videos)
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## Mathcad Community Challenge July 2022 - Area of a Spherical Triangle

This month's challenge is another geometry-based challenge - but it's non-Euclidean geometry. Given the following three points on a circle of radius 10 units, calculate the area of the spherical triangle: (5.339, 6.948, 4.819) (-4.018, -3.703, 8.375) (6.455, -6.679, -3.705) (Note that the point coordinates are rounded to three decimal places.)   Optional: Can you write a program or function that calculates the area for any three points on the surface? Is there a symbolic evaluation for three generic points (a,b,c), (d,e,f), and (g,h,k)?   Here is a 3D model in Creo 9 of the sphere and points:   Find the Mathcad Community Challenge Guidelines here!   Edit: the coordinates of the second point were incorrect. Wildly incorrect. I have no idea how I wrote down the wrong numbers.
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## Mathcad Community Challenge May 2022 - An Isoperimetric Geometry Problem

The first two challenges were biased towards mechanical engineering. May’s challenge pertains to geometry. Create a worksheet in which you calculate (1) the diameter of a circle and (2) the length of a side of a square that yields the minimum combined area for a combined perimeter of 1 meter. This is an optimization problem. What tools within Mathcad can provide you with a result? Optional: How can you depict the results? Can you use a 2D plot or Chart Component to visualize the answer? Find the Mathcad Community Challenge Guidelines here!
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## Transferring Mathcad Single User or Student license from an existing Host ID to a new Host ID

Solution: Mathcad Single User and Student Licenses can be transferred by using the link.  Select the version and enter the product code  Enter the new HOST ID onto which the license needs to be transferred - To correctly identify the Host ID on new machine, go to Windows Start > Programs > Accessories > Command Prompt > type ipconfig/all (ENTER) and with the Physical Address below the Ethernet adapter Local Area Connection there stands the Host ID -  Click on #Submit Request Below is the sample email triggered with new HOST ID license file (attachment)    Please save this license file to a secure location on your computer.
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## PTC Mathcad Community Challenge Index and Guidelines

PTC Mathcad Community Challenge is a bimonthly event where we pose a math problem for you to collaborate and solve using Mathcad Prime.
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## "My Top 3 Engineering Nightmares" Interview

https://www.engineering.com/story/my-top-3-engineering-nightmares-expert-shares-the-truth-on-software-selection   Anji Seberino, the head of our PTC Mathcad Application Engineer team, recently took some time to interview with engineering.com about her top 3 engineering nightmares accumulated from her own experience as an engineer. From missing units to debugging custom code to trying to reverse engineer IP stored in crazy, inherited spreadsheets, you too have probably faced these issues in your time in the industry when not everyone is using the right software and processes.   Let us know what you think of the interview!
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## "For Power Mathematics, Retire the Spreadsheet" with Brian Thompson

I'm sharing a recent long-form interview that PTC's CAD/engineering calculations general manager, Brian Thompson, had with engineering.com: https://www.engineering.com/story/video/for-power-mathematics-retire-the-spreadsheet Alongside with the video interview, there is also a written transcript. You don't have to share any of your own information to access it.   For Power Mathematics, Retire the Spreadsheet   Brian talked through a wide variety of topics, including why engineers and research scientists across many various industries choose PTC Mathcad and how those customers use it, the old and painful days of trying to perform complex calculations in spreadsheets, and some glimpses into the future of Mathcad.
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## Converting .mcd to .mcdx

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This video gives a quick demo on how to configure Mathcad Prime with floating license server.
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## Air Resistance Program.mcdx

Calculating the trajectory of a baseball, with air resistance.
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## PTC Mathcad 15.0 M040 is here!

As mentioned by Brent in a previous blog post, we’re committed to maintaining PTC Mathcad 15.0 for the foreseeable future to enable users who can’t yet migrate to the latest version of Mathcad to continue using the product and receiving support for it. We had a few last minute issues
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## Promising performance data from early PTC Mathcad Prime 4.0 development builds

PTC Mathcad is an ideal tool for recording the design knowledge for many different engineering problems. As engineering problems get more complex, the design knowledge grows in length and so does the Mathcad worksheet. The longer the Mathcad worksheet, the more regions it contains
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## WriteSTL Custom Function

Full list of worksheets   WriteSTL allows Mathcad users to create 3D models mathematically using PTC Mathcad then save them as STL files, perfectly suited for incorporation to CAD assemblies.   Along with the README, the WriteSTL.zip file contains two worksheets, showing 2 different matrix styles possible to generate 3D models. WriteSTL takes an array of triangle vertices. The included PTC Mathcad worksheets demonstrate inline routines to convert each matrix type to triangle vertices arrays.   Also included is the WriteSTL Custom Function compiled and linked for the Windows 7 64-bit platform. The MS Visual Studio project with source is included for anyone needing to build for different Windows Platforms. Microsoft has a free, Express version of Microsoft Visual Studio customers are using to successfully build PTC Mathcad Custom Functions.
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Got a great Mathcad story to share? Interested in showcasing your Mathcad chops? Consider this to be your official invitation to present your expertise to your peers. We have select opportunities for presenters – we’re looking for Mathcad Champions – for a variety of slots. New Mathcad
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## What's New In PTC Mathcad Prime 9

What's new in PTC Mathcad Prime 9 blog, interview, and webinar. Out now!
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