Automotive Lateral Dynamics and Mass Properties
by Brian Paul Wiegand
On May 20th at the Norfolk Hilton (“The Main”) an eight-hour course in “Automotive Lateral Dynamics” will be offered under the auspices of the SAWE as part of the society’s 78th International Conference. The course objective will be to enable the attendees to make reasonably accurate maximum lateral acceleration, rollover lateral acceleration, directional stability, and steering responsiveness determinations in the course of vehicle design. In route to attaining that objective, attendees will also become acquainted with such things as the calculation of roll resistance, suspension roll center location, sprung mass roll axis inclination, sprung mass roll inertia, sprung mass roll moment arm, sprung mass roll angle under lateral acceleration, vehicle roll gain, vehicle dynamic index in yaw, transient center of rotation location, and transient yaw inertia. There will also be considerable time spent on “Ackermann Steering Geometry” relationships and the behavior of tires under lateral load.
The seminar achieves its objective through a classical engineering approach that emphasizes determining vehicle lateral performance through simple models and simulations which are easy to comprehend and apply. Mass properties will play a major role as attendees will become acquainted with the principles of “weight accounting,” mass properties manipulation, and mass properties optimization.
This seminar is very important for anyone engaged in vehicle design, in particular, those designing with an emphasis on performance, and special effort has been expended to make it particularly relevant for those involved in the SAE Student Formula Design Competition. However, no one completing this course will walk away without having acquired some degree of enlightenment; as well as a Certificate of Achievement, print-out of the course Vu-Graphs, electronic (flash drive) copies of the SAWE Paper #3528 (“Mass Properties & Maximum Lateral Acceleration”), and the seminar’s “Maximum Lateral Acceleration Estimation Spreadsheet” (MS-Excel).
The course is open to students and mass properties professionals alike; the cost of registration for full-time students is only $50! Individuals desirous of attending this seminar should inform their student motorsport team leaders, contact email@example.com, and/or register on the conference web site at http://www.sawe.org.
According to a survey conducted by the Society of Allied Weight Engineers in 2018, organizations that design, build and/or operate aeronautical, marine, offshore or land vehicles need to promote the value of mass properties engineers within their organization to ensure vehicles can operate to their intended performance and safety parameters. Simultaneously, organizations must focus on replacing and transferring the knowledge and experience of mass properties engineers who will be leaving in large numbers in the next 5 to 10 years.
The aforementioned is the leading paragraph to a letter being distributed to the leaders in government and industry to promote the value of mass properties engineering, while also inviting them to learn more about SAWE and how SAWE can address the collective needs of those organizations who need competent mass properties engineers. The attached letter and accompanying enclosure have been distributed to the leadership of over 200 addressees worldwide. We want to increase the reach of this letter by asking you to share it with your fellow mass properties engineers and elevate this letter up your management chain to garner support for increased organizational awareness and involvement. We also encourage you to utilize this letter to secure financial support for attending the next SAWE International Conference in May in Norfolk, Virginia.
An email was sent to membership about a Mass Properties Engineer Certification. Below is the email you should have received along with a survey. This is an important opportunity for the Mass Properties career field, and we strongly encourage all members of SAWE to take the survey.
SAWE is exploring creating a Mass Properties Engineer Certification program. The envisioned program would provide mass properties engineers with credentials of their qualifications in a tiered level of experience structure. It would provide organizations with confidence that certified mass properties personnel have qualifications recognized by industry standards that will produce safe, efficient, and top quality results for their products. Eventually we envision qualifiying this certification program for ANSI accreditation and ISO compliance.
The following is a survey to get your feedback and thoughts about Mass Properties Engineer Certification. The program is currently in development and results of our exploration will be reviewed this May at the International Conference both at the Board of Director’s Meeting and in a special forum on Monday afternoon. Please take the survey and give us your thoughts and feedback.
If you are interested in writing an article for the Spring Journal, submissions are due April 19th.
Please feel free to reach out to VP Publications Nick Marickovich (firstname.lastname@example.org) or the Deputy Publications Melissa Gray (email@example.com) if you have questions. The subjects can vary from mentoring to projects/papers you have been involved in.
If you have ever considered writing for the Journal, now is the time!
Please send all Journal Articles for submission to Melissa Gray (firstname.lastname@example.org)
The Society of Allied Weight Engineers (SAWE) would like to extend a special conference invitation to our student members. The SAWE organization, invested in encouraging and mentoring the next generation of mass properties engineers, is excited to host our student attendees in Norfolk, Virginia, May 18th – 23rd, with either free (for student presenters) or reduced cost (for non-presenting student attendees) registration for the entire conference, including the welcome reception; admittance to all paper sessions; standards and practices meetings and luncheon; a 90% reduced rate on the automotive lateral stability class; and the awards banquet at the conclusion of the conference. In addition, our student attendees are invited to try their reasoning skills in the Escape Room, where you’re tasked to observe your surroundings, search for clues, and solve complex puzzles to find that special item in your room and escape in a defined amount of time – as challenging (but more fun) than a final exam! There are 1st Place ($1,000), 2nd Place ($750), and 3rd Place ($500) awards for the top three student papers. You do not have to attend the conference and present your paper to win, but you need to submit your abstract on or before March 1st. We hope you can attend the 78th International SAWE Conference – with or without having written a paper – and find it a wonderful opportunity to talk to and interact with our professional members, vendors, and industry sponsors. We are happy to answer your questions and share our professional journeys with you!
This is the fourth installment of SAWE awards. Having covered the Ed Payne Outstanding Engineer, Fellow, Honorary Fellow, and Richard Boynton Lifetime Achievement Awards, we now turn attention to the other prestigious awards and recognition within the SAWE.
Still within the purview of the Awards Committee are the Benefactor and Student Awards. The Benefactor Award is bestowed upon an individual who “because of their interest in the advancement of SAWE, has contributed substantial sums of money from their own resources.” The student award (separate from the Scholarship Fund) is bestowed upon a student who “demonstrates knowledge of discipline via papers, seminars, or makes significant contributions to the advancement of SAWE.”
Awarded by the VP Technical Director are the Mike Hackney Best Paper Award and the Best Student Paper Award, which are determined by the Technical Awards Committee.
Awards presented by the VP Publications are the Best Chapter Newsletter and the Best Chapter Website. The VP Publications is responsible for the review, selection, and presentation of these awards.
Appreciation awards are presented at the discretion of the SAWE President or VP Technical Director for “individuals who contribute significantly to the goals of the International President” or who have expended an “effort beyond the call of duty or office”
Over the last year+ we have worked to grow our social media presence as a Society. We believe this has been an important step forward and has greatly helped keep members connected.
The two main items that we have put our focus on is the SAWE Blog and the Monthly Bulletin. I believe we are at a good place and routine with both of these items and it is time to start growing and focusing on other platforms we can have a presence.
We, as a Society, need to grow our LinkedIn presence. We want members to be able to attach SAWE to their resumes on the site. We also believe this will be a great way to reach potential members.
If you are interested in helping us grow our Social Media presence, please contact me, Melissa Gray (email@example.com). I am hoping to add multiple members to the Social Media committee. Anyone that has experience with LinkedIn or is looking to get more involved in the Society, this is a great opportunity!
This is the fourth in a series of articles from the SAWE Awards Committee.
The Richard Boynton Lifetime Achievement Award is the most prestigious SAWE award. The candidate for this award “shall have demonstrated extraordinarily strong and sustained support of the Society over a significant number of years”. The nomination form is attached.
The awards defined thus far fall under the purview of the SAWE Awards Committee. A future article will address other recognition awarded by SAWE Executive Committee members.
Back in November 9th, 2018 the SAWE San Diego Chapter teamed up with the San Diego State University’s College of Engineering Student council to host an outreach event. Students and attendees were treated to pizza and refreshments while chapter director Doug Fisher gave a very engaging presentation and discussed what is mass properties engineering and SAWE’s important role in the industry. Following the presentation an open forum discussion took place and fellow members shared their career experiences as a mass properties engineers. Thank you to SDSU CESC President Nik Marquez for hosting and Doug Fisher for a great presentation!
This is the third in a series of articles from the SAWE Awards Committee.
The criteria for the Fellow and Honorary Fellow awards can be found in the attached files. These are presented in tandem because the criteria are similar. Note the differences in wording, viz., that a candidate for Fellow has “achieved distinction in Mass Properties Engineering, or has materially contributed to the advancement of the SAWE”; whereas, an Honorary Fellow has “achieved eminence in Mass Properties Engineering, or has made outstanding contributions to the advancement of the SAWE”.
A subtle distinction, but here are some additional guidelines: a candidate for Fellow has participated at the International level on committees or has led training sessions, or has been a key player in supporting the local chapter for an International Conference. Consistent and outstanding performance at the SAWE chapter level may also qualify, as would a distinct achievement in the field of Mass Properties Engineering.
Honorary Fellows are typically chosen from the field of Fellows and usually require a longer length of service at the International level in a key leadership position.